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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 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.
Author Notes
Financial support: This research was supported by grants from the National Institute of Allergy and Infectious Diseases (RO1AI050038), the University of Michigan Office of the Vice President for Research.
Authors' addresses: Nathaniel H. Schafrick, Mark L. Wilson, and Joseph N. S. Eisenberg, Department of Epidemiology, School of Public Health, The University of Michigan, Ann Arbor, MI, E-mails: natescha@umich.edu, wilsonml@umich.edu, and jnse@umich.edu. Meghan O. Milbrath and Veronica J. Berrocal, Department of Epidemiology and Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, E-mails: meghanom@umaich.edu, and berrocal@umich.edu.