Distribution of dengue vectors in neighborhoods with different urbanization types of Manaus, state of Amazonas, Brazil

Memórias do Instituto Oswaldo Cruz

Claudia M Ríos-velásquez¹  Cláudia T Codeço²  Nildimar A Honório¹  Paulo S Sabroza¹  Mônica Moresco¹  Ivana Cl Cunha¹  Antônio Levino¹  Luciano M Toledo¹  Sérgio Lb Luz¹ 

[1] ,Fiocruz Programa de Computação Científica Rio de Janeiro RJ ,Brasil

关键词: Aedes aegypti;    Aedes albopictus;    dengue;    Manaus;   

DOI  :  10.1590/S0074-02762007005000076

来源: SciELO

【 摘 要 】

Aedes aegypti 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.

【 授权许可】

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