The value of contact tracing and isolation in mitigation of COVID-19 epidemic: findings from outbreak investigation of COVID-19 onboard Nile Cruise Ship, Egypt, March 2020.
COVID-19
epidemiology
public health
Journal
BMJ global health
ISSN: 2059-7908
Titre abrégé: BMJ Glob Health
Pays: England
ID NLM: 101685275
Informations de publication
Date de publication:
07 2022
07 2022
Historique:
received:
02
02
2022
accepted:
21
02
2022
entrez:
15
7
2022
pubmed:
16
7
2022
medline:
20
7
2022
Statut:
ppublish
Résumé
WHO informed Egypt health authorities of individuals of different nationalities who proved positive for COVID-19 after returning from Egypt. Patients were among touristic group who visited Cairo and spent 1-week onboard Nile cruise ship. Investigation performed to confirm outbreak, detect source, and implement containment measures. Active case finding and contact tracing performed among contacts of the index cases and their contacts. Contacts defined as anyone within 6 feet from confirmed or suspected COVID-19 case for ≥15 min. Overall, 331 contacts, including 201 ship boarders and 130 hotel guests, were listed and interviewed using semistructured questionnaire and tested for COVID-19 by PCR. Among them, 136 (41.1%) were close contacts of index cases and 195 (58.9%) contacted secondary cases. Their mean age was 34.6±11.5 years, 251 (75.8%) were males and 126 (38.1%) non-Egyptians. Of them, 67 (20.2%) tested positive for COVID-19, including 57 (28.4%) ship boarders and 10 (7.7%) hotel guests. Per cent positive was significantly higher in: contacts of index cases, Egyptians, ship boarders and in males than corresponding categories (35.3% vs 9.7%, 22.9% vs 15.9%, 27.4% vs 7.7%, 24.7% vs 6.3%), respectively. Of all positive cases, 40 (59.7%) were asymptomatic where ship boarders, non-Egyptians, >50 years old and females were more likely to be asymptomatic than corresponding categories (85.0 vs 48.9%, 72.7 vs 54.5%, 100.0 vs 56.5%), respectively. COVID-19 patients among group of tourists triggered an outbreak onboard Nile ship and hotel in Egypt. Outbreak quickly contained through lab testing, case isolation, strict infection control measures and contact tracing which proved effective in reducing COVID-19 transmission early in pandemic.
Identifiants
pubmed: 35840167
pii: bmjgh-2022-008681
doi: 10.1136/bmjgh-2022-008681
pmc: PMC9295195
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.
Déclaration de conflit d'intérêts
Competing interests: None declared.
Références
Emerg Infect Dis. 2020 Jul;26(7):
pubmed: 32364890
Science. 2020 May 8;368(6491):
pubmed: 32234805
JAMA Netw Open. 2020 May 1;3(5):e2010182
pubmed: 32459353
Lancet Public Health. 2020 Aug;5(8):e452-e459
pubmed: 32682487
Int J Infect Dis. 2020 Aug;97:293-295
pubmed: 32535295
J Med Virol. 2021 Feb;93(2):820-830
pubmed: 32691881
Lancet Infect Dis. 2020 Oct;20(10):1151-1160
pubmed: 32559451
Euro Surveill. 2020 Mar;25(10):
pubmed: 32183930