@article{fdi:35974, title = {{V}ector density gradients and the epidemiology of urban malaria in {D}akar, {S}enegal}, author = {{T}rape, {J}ean-{F}ran{\c{c}}ois and {L}efebvre-{Z}ante, {E}velyne and {L}egros, {F}abrice and {N}diaye, {G}. and {B}ouganali, {H}. and {D}ruilhe, {P}. and {S}alem, {G}{\'e}rard}, editor = {}, language = {{ENG}}, abstract = {{T}he dispersion of anopheline mosquitoes from their breeding places and its impact on malaria epidemiology has been investigated in {D}akar, {S}enegal, where malaria is hypoendemic and almost exclusively transmitted by {A}nopheles arabiensis. {P}yrethrum 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. {A}ccording to the distance from the marsh, vector density (the number of {A}n. 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. {T}he proportion of 8-11-year-old children with negative immunofluorescent antibody test results for {P}lasmodium falciparum was 17%, 28%, 44%, 54%, 50%, 63%, and 73%, respectively, in these different sections. {M}alaria 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. {T}hese findings show the epidemiologic importance of vector density gradients in {D}akar. {T}he implications for malaria control in urban areas are discussed.}, keywords = {{PALUDISME} ; {TRANSMISSION} ; {PREVALENCE} ; {IMMUNOLOGIE} ; {ENFANT} {D}'{AGE} {SCOLAIRE} ; {DISTRIBUTION} {SPATIALE} ; {VECTEUR} ; {ETHOLOGIE} ; {VARIATION} {SAISONNIERE} ; {ENQUETE} {A} {PASSAGES} {REPETES} ; {MILIEU} {URBAIN} ; {SURVEILLANCE} {EPIDEMIOLOGIQUE} ; {SENEGAL} ; {DAKAR}}, booktitle = {}, journal = {{T}he {A}merican {J}ournal of {T}ropical {M}edicine and {H}ygiene}, volume = {47}, numero = {2}, pages = {181--189}, ISSN = {0002-9637}, year = {1992}, DOI = { 10.4269/ajtmh.1992.47.181}, URL = {https://www.documentation.ird.fr/hor/fdi:35974}, }