Bivalent Prefusion F Vaccine in Pregnancy to Prevent RSV Illness in Infants.

Female Humans Infant Infant, Newborn Pregnancy Antibodies, Viral Communicable Diseases / therapy Double-Blind Method Injections, Intramuscular Respiratory Syncytial Virus Infections / epidemiology Respiratory Syncytial Virus Vaccines / administration & dosage Respiratory Syncytial Viruses Treatment Outcome Vaccination / adverse effects Vaccine Efficacy Vaccines, Combined / administration & dosage Respiratory Tract Infections / epidemiology

Journal

The New England journal of medicine
ISSN: 1533-4406
Titre abrégé: N Engl J Med
Pays: United States
ID NLM: 0255562

Informations de publication

Date de publication:
20 Apr 2023
Historique:
medline: 21 4 2023
pubmed: 6 4 2023
entrez: 5 4 2023
Statut: ppublish

Résumé

Whether vaccination during pregnancy could reduce the burden of respiratory syncytial virus (RSV)-associated lower respiratory tract illness in newborns and infants is uncertain. In this phase 3, double-blind trial conducted in 18 countries, we randomly assigned, in a 1:1 ratio, pregnant women at 24 through 36 weeks' gestation to receive a single intramuscular injection of 120 μg of a bivalent RSV prefusion F protein-based (RSVpreF) vaccine or placebo. The two primary efficacy end points were medically attended severe RSV-associated lower respiratory tract illness and medically attended RSV-associated lower respiratory tract illness in infants within 90, 120, 150, and 180 days after birth. A lower boundary of the confidence interval for vaccine efficacy (99.5% confidence interval [CI] at 90 days; 97.58% CI at later intervals) greater than 20% was considered to meet the success criterion for vaccine efficacy with respect to the primary end points. At this prespecified interim analysis, the success criterion for vaccine efficacy was met with respect to one primary end point. Overall, 3682 maternal participants received vaccine and 3676 received placebo; 3570 and 3558 infants, respectively, were evaluated. Medically attended severe lower respiratory tract illness occurred within 90 days after birth in 6 infants of women in the vaccine group and 33 infants of women in the placebo group (vaccine efficacy, 81.8%; 99.5% CI, 40.6 to 96.3); 19 cases and 62 cases, respectively, occurred within 180 days after birth (vaccine efficacy, 69.4%; 97.58% CI, 44.3 to 84.1). Medically attended RSV-associated lower respiratory tract illness occurred within 90 days after birth in 24 infants of women in the vaccine group and 56 infants of women in the placebo group (vaccine efficacy, 57.1%; 99.5% CI, 14.7 to 79.8); these results did not meet the statistical success criterion. No safety signals were detected in maternal participants or in infants and toddlers up to 24 months of age. The incidences of adverse events reported within 1 month after injection or within 1 month after birth were similar in the vaccine group (13.8% of women and 37.1% of infants) and the placebo group (13.1% and 34.5%, respectively). RSVpreF vaccine administered during pregnancy was effective against medically attended severe RSV-associated lower respiratory tract illness in infants, and no safety concerns were identified. (Funded by Pfizer; MATISSE ClinicalTrials.gov number, NCT04424316.).

Sections du résumé

BACKGROUND BACKGROUND
Whether vaccination during pregnancy could reduce the burden of respiratory syncytial virus (RSV)-associated lower respiratory tract illness in newborns and infants is uncertain.
METHODS METHODS
In this phase 3, double-blind trial conducted in 18 countries, we randomly assigned, in a 1:1 ratio, pregnant women at 24 through 36 weeks' gestation to receive a single intramuscular injection of 120 μg of a bivalent RSV prefusion F protein-based (RSVpreF) vaccine or placebo. The two primary efficacy end points were medically attended severe RSV-associated lower respiratory tract illness and medically attended RSV-associated lower respiratory tract illness in infants within 90, 120, 150, and 180 days after birth. A lower boundary of the confidence interval for vaccine efficacy (99.5% confidence interval [CI] at 90 days; 97.58% CI at later intervals) greater than 20% was considered to meet the success criterion for vaccine efficacy with respect to the primary end points.
RESULTS RESULTS
At this prespecified interim analysis, the success criterion for vaccine efficacy was met with respect to one primary end point. Overall, 3682 maternal participants received vaccine and 3676 received placebo; 3570 and 3558 infants, respectively, were evaluated. Medically attended severe lower respiratory tract illness occurred within 90 days after birth in 6 infants of women in the vaccine group and 33 infants of women in the placebo group (vaccine efficacy, 81.8%; 99.5% CI, 40.6 to 96.3); 19 cases and 62 cases, respectively, occurred within 180 days after birth (vaccine efficacy, 69.4%; 97.58% CI, 44.3 to 84.1). Medically attended RSV-associated lower respiratory tract illness occurred within 90 days after birth in 24 infants of women in the vaccine group and 56 infants of women in the placebo group (vaccine efficacy, 57.1%; 99.5% CI, 14.7 to 79.8); these results did not meet the statistical success criterion. No safety signals were detected in maternal participants or in infants and toddlers up to 24 months of age. The incidences of adverse events reported within 1 month after injection or within 1 month after birth were similar in the vaccine group (13.8% of women and 37.1% of infants) and the placebo group (13.1% and 34.5%, respectively).
CONCLUSIONS CONCLUSIONS
RSVpreF vaccine administered during pregnancy was effective against medically attended severe RSV-associated lower respiratory tract illness in infants, and no safety concerns were identified. (Funded by Pfizer; MATISSE ClinicalTrials.gov number, NCT04424316.).

Identifiants

DOI: 10.1056/NEJMoa2216480 PMID: 37018474
pubmed: 37018474
doi: 10.1056/NEJMoa2216480
doi:

Substances chimiques

Antibodies, Viral 0
Respiratory Syncytial Virus Vaccines 0
Vaccines, Combined 0

Banques de données

ClinicalTrials.gov
['NCT04424316']

Types de publication

Clinical Trial, Phase III Journal Article Multicenter Study Randomized Controlled Trial

Langues

eng

Sous-ensembles de citation

IM

Pagination

1451-1464

Investigateurs

Tyler Adam (T)
Mario Aguilar (M)
Khatija Ahmed (K)
Mohamed Ahmed (M)
Shinobu Akada (S)
Ruben Aleman (R)
Ai Anami (A)
Evan Anderson (E)
Marquita Anderson (M)
Martti Antila (M)
Eugene Athan (E)
Jeffrey Baker (J)
John Baker (J)
Peyman Banooni (P)
Shaun Barnabas (S)
Elizabeth Barnett (E)
José Luis Bartha Rasero (JL)
Thomas Benfield (T)
Dawn Black (D)
Kitty Bloemenkamp (K)
Bradford Brabec (B)
Kent Branson (K)
John Byron (J)
Quito Carr (Q)
Kristina Carter (K)
Te-Fu Chan (TF)
Peter Chen (P)
Cheng-Hsun Chiu (CH)
Robert Clifford (R)
Dean Coonrod (D)
Martín Darraidou (M)
Elaine Davidson (E)
Keith Davis (K)
Angela Dawson (A)
Pieter-Kees de Groot (PK)
Koen Deurloo (K)
Jaime Deville (J)
Rachel DiTeresi (R)
Pablo Doreski (P)
Laura Downing (L)
María Del Rosario Durón Padilla (MDR)
Janet Englund (J)
Merlin Fausett (M)
María Del Pilar Fernández Fraile (MDP)
Pedro Ferrand Miranda (P)
Thea Kølsen Fischer (TK)
Leon Fouche (L)
Guillermo Galán (G)
Cipiran Gheorghe (C)
Jennifer Gilner (J)
Vanna Gold (V)
Bernard Gonik (B)
Gary Gregerson (G)
Rebecca Griffith (R)
Sebastián Grinstein (S)
Joanna Gullam (J)
Abel Guzmán López (A)
Erica Haake (E)
Jeffrey Hamre (J)
Robyn Hartvickson (R)
Kazunari Hashiguchi (K)
Barry Heller (B)
Luis Berthin Hernández Hernández (LB)
Joselito Hernández Pichardo (J)
Elizea Horne (E)
Jian-Pei Huang (JP)
Li-Min Huang (LM)
Sandra Hurtado (S)
Kazushige Ikeda (K)
Yasunori Ishihara (Y)
Naseem Jaffrani (N)
Oley Jallow (O)
Robert Jeanfreau (R)
Xuezhi Jiang (X)
Isik Johansen (I)
Peter Johnson (P)
Lisa Jose (L)
Beate Kampmann (B)
Anu Kantele (A)
Hisham Keblawi (H)
Joseph Kilianski (J)
Yoon Ha Kim (YH)
Satu Kokko (S)
Kenzo Kosaka (K)
Leonard Krilov (L)
Outi Laajalahti (O)
Laurie Landeen (L)
Blake Landry (B)
Joanne Langley (J)
David Larsen (D)
Chien-Yu Lin (CY)
Conrado Llapur (C)
Johannes Lombaard (J)
Shabir Madhi (S)
Christ-Ann Magloire (CA)
Yvonne Maldonado (Y)
Darvy Mann (D)
Helen Marshall (H)
Federico Martinón-Torres (F)
Paul Matherne (P)
Bassem Maximos (B)
Kristin McDay (K)
David Metz (D)
Torri Metz (T)
Hugh Miller (H)
Jane Miller (J)
Vicki Miller (V)
Mariano Miranda Valdivieso (M)
Emilio Monteagudo Montesinos (E)
Gregory Moore (G)
Franklin Morgan (F)
Tomoko Moritani (T)
Mirella Mourad (M)
Paulo Nader (P)
Albert Nassir (A)
Silvina Natalini Martinez (S)
Luis Navarro (L)
Aftab Naz (A)
Jason Newland (J)
Jose Novoa Pizarro (J)
Mora Obed (M)
Min-Jeong Oh (MJ)
Claire Oluwalana (C)
Richard Ondrizek (R)
Perry Osborn (P)
Tolulope Osowo (T)
Takeo Otsuki (T)
Enrique Oyarzún Ebensperger (E)
Pauliina Paavola (P)
Kristy Palomares (K)
Joong Park (J)
Esther Park-Hwang (E)
Rekha Patel (R)
Dawnette Peppler (D)
Gonzalo Pérez Marc (G)
Roxanne Pero (R)
Nicole Perreras (N)
Charles Plimpton (C)
Raymond Poliakin (R)
Stephen Pound (S)
Heather Pugmire (H)
Edwin Ramirez (E)
Alan Rappleye (A)
Michael Rausch (M)
Peter Richmond (P)
Kyle Rickner (K)
Cynthia Robbins (C)
John Roberts (J)
Darrell Robinson (D)
Charles Rogers (C)
Pablo Rojo Conejo (P)
Tracy Roth (T)
Henry Rozycki (H)
Antonio Saad (A)
Tetsuhiro Sakihara (T)
Abril Salinas Quero (A)
Megan Schellinger (M)
Elizabeth Schlaudecker (E)
Michael Scutella (M)
Koji Seo (K)
Hyun-Joo Seol (HJ)
Ilkka Seppä (I)
Charles Sharp (C)
John Sherman (J)
Heidi Siebert (H)
Eric Simoes (E)
Daniel Skupski (D)
Jane Sneed (J)
Adriana Soto (A)
Gary Soucie (G)
Nina Staerke (N)
Stephen Stamatis (S)
Thorsten Stanley (T)
Renato T Stein (RT)
Scott Striplin (S)
Stephen Stripling (S)
Jack Swanson (J)
Nao Taguchi (N)
Bruce Tapiero (B)
John Thorp (J)
Juan Carlos Tinoco Favila (JC)
Alan Tita (A)
Van Tran (V)
Marie-Louise Vachon (ML)
Marlies van Houten (M)
Sergio L Vargas (SL)
Tiago Veras (T)
Timothy Villegas (T)
Keith Vrbicky (K)
Stuart Weprin (S)
John Wideman (J)
Hugh Wilkinson (H)
Frank Williams (F)
Karen Wilson (K)
Lori Wittman (L)
Samuel Wolf (S)
Hiroshi Yamashita (H)
Inci Yildirim (I)
Ali Zakir (A)
Heather Zar (H)

Commentaires et corrections

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Informations de copyright

Copyright © 2023 Massachusetts Medical Society.

Auteurs

Beate Kampmann (B)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Shabir A Madhi (SA)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).
ORCID: 0000-0002-7629-0636

Iona Munjal (I)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Eric A F Simões (EAF)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Barbara A Pahud (BA)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Conrado Llapur (C)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Jeffrey Baker (J)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Gonzalo Pérez Marc (G)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

David Radley (D)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Emma Shittu (E)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Julia Glanternik (J)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).
ORCID: 0000-0001-9004-8558

Hasra Snaggs (H)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

James Baber (J)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Philip Zachariah (P)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Shaun L Barnabas (SL)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Merlin Fausett (M)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Tyler Adam (T)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Nicole Perreras (N)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Marlies A Van Houten (MA)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Anu Kantele (A)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Li-Min Huang (LM)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Louis J Bont (LJ)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Takeo Otsuki (T)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Sergio L Vargas (SL)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Joanna Gullam (J)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Bruce Tapiero (B)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Renato T Stein (RT)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Fernando P Polack (FP)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Heather J Zar (HJ)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Nina B Staerke (NB)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

María Duron Padilla (M)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Peter C Richmond (PC)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Kenneth Koury (K)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Katherine Schneider (K)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Elena V Kalinina (EV)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

David Cooper (D)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Kathrin U Jansen (KU)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Annaliesa S Anderson (AS)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Kena A Swanson (KA)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).
ORCID: 0000-0002-3389-8414

William C Gruber (WC)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

Alejandra Gurtman (A)

From the Medical Research Council Unit the Gambia, London School of Hygiene and Tropical Medicine, Fajara, Gambia (B.K.); the Institute for International Health Charité, Universitätsmedizin, Berlin (B.K.); the South African Medical Research Council (MRC) Vaccines and Infectious Diseases Analytics Research Unit, Infectious Diseases and Oncology Research Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (S.A.M.), and Family Centre for Research with Ubuntu, Department of Paediatrics and Child Health, University of Stellenbosch (S.L.B.), and the Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, South African MRC Unit on Child and Adolescent Health, University of Cape Town (H.J.Z.), Cape Town - all in South Africa; Vaccine Research and Development, Pfizer, Pearl River, NY (I.M., B.A.P., D.R., J. Glanternik, H.S., P.Z., K.K., K.S., E.V.K., D.C., K.U.J., A.S.A., K.A.S., W.C.G., A.G.); Children's Hospital Colorado, Aurora (E.A.F.S.); Instituto de Maternidad y Ginecología Nuestra Señora de Las Mercedes, San Miguel de Tucumán (C.L.), and iTrials-Hospital Militar Central (G.P.M., F.P.P.) and iTrials (S.L.V.), Buenos Aires - all in Argentina; Clinical Research Prime, Idaho Falls, ID (J. Baker); Vaccine Research and Development, Pfizer, Hurley, United Kingdom (E.S.); Vaccine Clinical Research, Pfizer, Sydney, NSW (J. Baber), and the University of Western Australia School of Medicine, Vaccine Trials Group, Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, and Perth Children's Hospital, Nedlands, WA (P.C.R.) - all in Australia; Boeson Research, Missoula, MT (M.F.); Meridian Clinical Research, Hastings, NE (T.A.); Asian Hospital and Medical Center, Manila, Philippines (N.P.); the Department of Pediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp (M.A.V.H.), and the Departments of Pediatrics and Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, and Respiratory Syncytial Virus Network Foundation, Zeist (L.J.B.) - all in the Netherlands; Meilahti Vaccine Research Center, Inflammation Center, University of Helsinki and Helsinki University Hospital, Helsinki (A.K.); National Taiwan University Hospital, Taipei (L.-M.H.); the Department of Obstetrics and Gynecology, Sendai City Hospital, Sendai, Japan (T.O.); the Institute of Biomedical Sciences, University of Chile School of Medicine, Santiago, Chile (S.L.V.); University of Otago and New Zealand Clinical Research - both in Christchurch, New Zealand (J. Gullam); Centre Hospitalier Universitaire Sainte-Justine, Montreal (B.T.); Hospital Moinhos de Vento and Pontifícia Universidade Católica do Rio Grande do Sul - both in Porto Alegre, Brazil (R.T.S.); the Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark (N.B.S.); and Arké Study Management Organization, Mexico City (M.D.P.).

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