Distribution of dengue vectors in neighborhoods with different urbanization types of Manaus, state of Amazonas, Brazil
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 ec...
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Published in | Memórias do Instituto Oswaldo Cruz Vol. 102; no. 5; pp. 617 - 623 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English Portuguese |
Published |
Brazil
Fundação Oswaldo Cruz, Fiocruz
01.08.2007
Instituto Oswaldo Cruz, Ministério da Saúde Fundação Oswaldo Cruz (FIOCRUZ) |
Subjects | |
Online Access | Get full text |
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Summary: | 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. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1678-8060 0074-0276 1678-8060 |
DOI: | 10.1590/S0074-02762007005000076 |