Spatial clustering of Aedes aegypti related to breeding container characteristics in Coastal Ecuador: implications for dengue control

Mosquito management within households remains central to the control of dengue virus transmission. An important factor in these management decisions is the spatial clustering of Aedes aegypti. We measured spatial clustering of Ae. aegypti in the town of Borbón, Ecuador and assessed what characterist...

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Bibliographic Details
Published in:The American journal of tropical medicine and hygiene 2013-10, Vol.89 (4), p.758-765
Main Authors: Schafrick, Nathaniel H, Milbrath, Meghan O, Berrocal, Veronica J, Wilson, Mark L, Eisenberg, Joseph N S
Format: Article
Language:English
Subjects:
Aedes - physiology
Aedes aegypti
Animals
Cluster Analysis
Dengue - prevention & control
Dengue virus
Ecuador - epidemiology
Household Articles
Humans
Models, Biological
Odds Ratio
Risk Factors
Urban Population
Water
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Summary:Mosquito management within households remains central to the control of dengue virus transmission. An important factor in these management decisions is the spatial clustering of Aedes aegypti. We measured spatial clustering of Ae. aegypti in the town of Borbón, Ecuador and assessed what characteristics of breeding containers influenced the clustering. We used logistic regression to assess the spatial extent of that clustering. We found strong evidence for juvenile mosquito clustering within 20 m and for adult mosquito clustering within 10 m, and stronger clustering associations for containers ≥ 40 L than those < 40 L. Aedes aegypti clusters persisted after adjusting for various container characteristics, suggesting that patterns are likely attributable to short dispersal distances rather than shared characteristics of containers in cluster areas. These findings have implications for targeting Ae. aegypti control efforts.
ISSN:0002-9637
1476-1645
DOI:10.4269/ajtmh.12-0485