The efficacy of attractive targeted sugar baits in reducing malaria vector abundance in low-endemicity settings of northwest Mali.

Animals Anopheles / physiology Mali Mosquito Vectors / physiology Female Mosquito Control / methods Malaria / prevention & control Sugars Sporozoites
Anopheles gambiae ATSB Bait station Entomological inoculation rate (EIR) Malaria Mali

Journal

Malaria journal
ISSN: 1475-2875
Titre abrégé: Malar J
Pays: England
ID NLM: 101139802

Informations de publication

Date de publication:
23 Oct 2024
Historique:
received: 05 01 2024
accepted: 28 08 2024
medline: 24 10 2024
pubmed: 24 10 2024
entrez: 24 10 2024
Statut: epublish

Résumé

Attractive targeted sugar baits (ATSBs) have the potential to significantly reduce infective female Anopheles mosquitoes in arid areas, such as in Northern Mali. Malaria is epidemic in the north due to the limited viability of Anopheles species in the desert climate. The goal of this study was to determine of the effect of ATSB on the number of older female An. gambiae and on the number of sporozoite-positive females in villages in northern Mali. Villages were located in the north of Mali. In this study, 5677 ATSB stations were deployed, two on each home, in ten villages during late July and early August 2019. Ten villages served as controls. After a pre-treatment monitoring period in July, An. gambiae populations were monitored again from August to December using CDC-UV light traps, pyrethrum spray catches (PSC), and human landing catches (HLC). Mosquitoes were dissected to estimate their age, while ELISA detected sporozoite positivity. The monthly entomological inoculation rates (EIRs) were calculated for HLC indoors and outdoors. Data from villages were compared using t-tests, while bait station weighted density versus amount of collected females was checked with a Pearson's correlation. A total of 2703 female An. gambiae were caught from treated villages, 4582 from control villages, a 41.0% difference. Dissection of 1759 females showed that ATSB significantly reduced the number of older females. The proportion of older females in treated villages was 0.93% compared to 9.4% in control villages. ELISA analysis of 7285 females showed that bait stations reduced the number of sporozoite-positive females. The infective females in treated villages was 0.30% compared to 2.73% in the controls. The greater the density of bait stations deployed, the fewer the older, infective females (P < 0.05). EIRs were low in control villages except in months when An. gambiae populations were high. EIRs in ATSB placement villages remained zero. Significant reductions (P < 0.0001) in An. gambiae males were observed. Bait stations reduced all measures of vector populations in this study. In a low-transmission setting, ATSB has the potential to greatly reduce malaria.

Sections du résumé

BACKGROUND BACKGROUND
Attractive targeted sugar baits (ATSBs) have the potential to significantly reduce infective female Anopheles mosquitoes in arid areas, such as in Northern Mali. Malaria is epidemic in the north due to the limited viability of Anopheles species in the desert climate. The goal of this study was to determine of the effect of ATSB on the number of older female An. gambiae and on the number of sporozoite-positive females in villages in northern Mali.
METHODS METHODS
Villages were located in the north of Mali. In this study, 5677 ATSB stations were deployed, two on each home, in ten villages during late July and early August 2019. Ten villages served as controls. After a pre-treatment monitoring period in July, An. gambiae populations were monitored again from August to December using CDC-UV light traps, pyrethrum spray catches (PSC), and human landing catches (HLC). Mosquitoes were dissected to estimate their age, while ELISA detected sporozoite positivity. The monthly entomological inoculation rates (EIRs) were calculated for HLC indoors and outdoors. Data from villages were compared using t-tests, while bait station weighted density versus amount of collected females was checked with a Pearson's correlation.
RESULTS RESULTS
A total of 2703 female An. gambiae were caught from treated villages, 4582 from control villages, a 41.0% difference. Dissection of 1759 females showed that ATSB significantly reduced the number of older females. The proportion of older females in treated villages was 0.93% compared to 9.4% in control villages. ELISA analysis of 7285 females showed that bait stations reduced the number of sporozoite-positive females. The infective females in treated villages was 0.30% compared to 2.73% in the controls. The greater the density of bait stations deployed, the fewer the older, infective females (P < 0.05). EIRs were low in control villages except in months when An. gambiae populations were high. EIRs in ATSB placement villages remained zero. Significant reductions (P < 0.0001) in An. gambiae males were observed.
CONCLUSIONS CONCLUSIONS
Bait stations reduced all measures of vector populations in this study. In a low-transmission setting, ATSB has the potential to greatly reduce malaria.

Identifiants

DOI: 10.1186/s12936-024-05098-4 PMID: 39443969
pubmed: 39443969
doi: 10.1186/s12936-024-05098-4
pii: 10.1186/s12936-024-05098-4
doi:

Substances chimiques

Sugars 0

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

319

Informations de copyright

© 2024. The Author(s).

Références

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Auteurs

Mohamed M Traore (MM)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.

Amy Junnila (A)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.

Sekou F Traore (SF)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.

Seydou Doumbia (S)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.

Edita E Revay (EE)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.

Yosef Schlein (Y)

Department of Microbiology and Molecular Genetics, Kuvin Centre for the Study of Infectious and Tropical Diseases, Faculty of Medicine, IMRIC, Hebrew University, Jerusalem, Israel.

Roman V Yakovlev (RV)

Western Caspian University, 31 Istiglaliyyat Street, Baku, Azerbaijan.
Tomsk State University, Pr. Lenina 36, 634050, Tomsk, Russia.

Aidas Saldaitis (A)

Nature Research Centre, Akademijos Str. 2, 08412, Vilnius-21, Lithuania.

Liwang Cui (L)

Division of Infectious Diseases and International Medicine, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA.

Gergely Petrányi (G)

SNSB-Zoologische Staatssammlung München, 81247, Munich, Germany.

Rui-De Xue (RD)

Anastasia Mosquito Control District, 120 EOC, St. Augustine, FL, 32092, USA.

Alexey M Prozorov (AM)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.
Ludwig-Maximilians-University of Munich, Großhaderner Str. 2, 82152, Planegg-Martinsried, Germany.

Tatiana A Prozorova (TA)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.

Aboubakr S Kone (AS)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.

Nafomon Sogoba (N)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.

Mahamadou Diakite (M)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali.

John Vontas (J)

Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 70013, Heraklion, Greece.
Pesticide Science Laboratory, Department of Crop Science, Agricultural University of Athens, 11855, Athens, Greece.

John C Beier (JC)

Department of Public Health Sciences, Miller School of Medicine, University of Miami, Miami, FL, USA.

Günter C Müller (GC)

Malaria Research and Training Center, Faculty of Medicine, Pharmacy and Odonto-Stomatology, University of Sciences, Techniques and Technology of Bamako, BP 1805, Bamako, Mali. guntercmuller@hotmail.com.

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Classifications MeSH

questionsmedicales.fr › Eucaryotes › Animaux › The efficacy of attractive targeted sugar...
questionsmedicales.fr › Eucaryotes › Animaux › Invertébrés › Arthropodes › Insectes › Pterygota › Neoptera › Holometabola › Diptera › Nematocera › Culicomorpha › Culicidae › Anopheles › The efficacy of attractive targeted sugar...
questionsmedicales.fr › Régions géographiques › Afrique › Afrique subsaharienne › Afrique de l'Ouest › Mali › The efficacy of attractive targeted sugar...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Méthodes épidémiologiques › Chaîne d'infection › Vecteurs de maladies › Vecteurs arthropodes › Vecteurs insectes › Vecteurs moustiques › The efficacy of attractive targeted sugar...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Pratiques en santé publique › Contrôle des maladies transmissibles › Lutte contre les nuisibles › Lutte contre les insectes › Lutte contre les moustiques › The efficacy of attractive targeted sugar...
questionsmedicales.fr › Infection › Maladies vectorielles › Paludisme › The efficacy of attractive targeted sugar...
questionsmedicales.fr › Glucides › Sucres › The efficacy of attractive targeted sugar...
questionsmedicales.fr › Phénomènes physiologiques › Croissance et développement › Morphogenèse › Métamorphose biologique › Étapes du cycle de vie › Oocystes › Sporozoïtes › The efficacy of attractive targeted sugar...