Volume 20, Number 2—February 2014
Dispatch
Co-circulation of West Nile Virus Variants, Arizona, USA, 2010
Figure 1

Figure 1. . Distribution of mosquito sampling sites in Maricopa County, Arizona, USA, during the 2010 West Nile virus (WNV) outbreak investigation and collection dates/locations of pools yielding indicated WNV isolates used for molecular and/or phenotypic analysis. Gray lines indicate individual zip code boundaries. CDC, Centers for Disease Control and Prevention.
1These authors contributed equally to this article.
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