3 research outputs found
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 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