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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 102, No. 5, 2007, pp. 617-623
Bioline Code: oc07097
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 102, No. 5, 2007, pp. 617-623

 en Distribution of dengue vectors in neighborhoods with different urbanization types of Manaus, state of Amazonas, Brazil
Ríos-Velásquez, Claudia M; Codeço, Cláudia T; Honório, Nildimar A; Sabroza, Paulo S; Moresco, Mônica; Cunha, Ivana CL; Levino, Antônio; Toledo, Luciano M & Luz, Sérgio LB

Abstract

Aedes aegypti   check for this species in other resources and Ae. albopictus are vectors of dengue viruses, which cause endemic disease in the city of Manaus, capital of the state of Amazonas, Brazil. More than 53 thousand cases have been registered in this city since the first epidemic in 1998. We evaluated the hypothesis that different ecological conditions result in different patterns of vector infestation in Manaus, by measuring the infestation level in four neighborhoods with different urbanization patterns, during the rainy (April), dry (August), and transitional (November) seasons. Ae. aegypti predominated throughout the study areas and sampling periods, representing 86% of all specimens collected in oviposition traps. High frequencies of houses positive for both species were observed in all studied sites, with Ae. aegypti present in more than 84% of the houses in all seasons. Ae. albopictus, on the other hand, showed more spatial and temporal variation in abundance. We found no association between infestation level and house traits. This study highlights the homogeneity of dengue vector distribution in Manaus.

Keywords
Aedes aegypti - Aedes albopictus - dengue - Manaus

 
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