Figure 1.

Map of Florida with five regions from which the eastern equine encephalitis virus (EEEV) isolates and sentinel chickens were sampled. The x axis represents longitude and y axis represents latitude. The five regions in Florida are colored and marked in the figure. The darker shading in each region indicates counties in the region participating in the sentinel chicken surveillance program during the study period, 2005 to 2016, whereas the lighter shade indicates no chicken surveillance data were available from those counties. Black dots in each county represent EEEV isolates and size of the dot represents the total number of isolates. This figure appears in color at www.ajtmh.org.