Trape Jean-François, Lefebvre-Zante Evelyne, Legros Fabrice, Ndiaye G., Bouganali H., Druilhe P., Salem Gérard. (1992). Vector density gradients and the epidemiology of urban malaria in Dakar, Senegal. The American Journal of Tropical Medicine and Hygiene, 47 (2), 181-189. ISSN 0002-9637.
Titre du document
Vector density gradients and the epidemiology of urban malaria in Dakar, Senegal
Année de publication
1992
Auteurs
Trape Jean-François, Lefebvre-Zante Evelyne, Legros Fabrice, Ndiaye G., Bouganali H., Druilhe P., Salem Gérard
Source
The American Journal of Tropical Medicine and Hygiene, 1992,
47 (2), 181-189 ISSN 0002-9637
The dispersion of anopheline mosquitoes from their breeding places and its impact on malaria epidemiology has been investigated in Dakar, Senegal, where malaria is hypoendemic and almost exclusively transmitted by Anopheles arabiensis. Pyrethrum spray collections were carried out along a 910-meter area starting from a district bordering on a permanent marsh and continuing into the center of the city. According to the distance from the marsh, vector density (the number of An. arabiensis per 100 rooms) at 0-160, 160-285, 285-410, 410-535, 535-660, 660-785, and 785-910 meters was 84, 40, 5, 2, 2, 0.4, and 0, respectively, during the dry season, and 414, 229, 110, 84, 99, 69, and 21, respectively, during the rainy season. The proportion of 8-11-year-old children with negative immunofluorescent antibody test results for Plasmodium falciparum was 17%, 28%, 44%, 54%, 50%, 63%, and 73%, respectively, in these different sections. Malaria prevalence in the community was maximum in the area bordering on the marsh where it ranged from 1% to 15% (average 6%) according to age and season of the year. These findings show the epidemiologic importance of vector density gradients in Dakar. The implications for malaria control in urban areas are discussed.
Plan de classement
Epidémiologie du paludisme [052ANOPAL03]
Descripteurs
PALUDISME ; TRANSMISSION ; PREVALENCE ; IMMUNOLOGIE ; ENFANT D'AGE SCOLAIRE ; DISTRIBUTION SPATIALE ; VECTEUR ; ETHOLOGIE ; VARIATION SAISONNIERE ; ENQUETE A PASSAGES REPETES ; MILIEU URBAIN ; SURVEILLANCE EPIDEMIOLOGIQUE
Description Géographique
SENEGAL ; DAKAR
Localisation
Fonds IRD [F B35974] ;
Dakar
;
Montpellier (Centre IRD)
Identifiant IRD
fdi:35974
