Volume 22, Number 12—December 2016
Dispatch
Reemergence of St. Louis Encephalitis Virus, California, 2015
Figure 1

Figure 1. St. Louis encephalitis virus (SLEV) and West Nile virus (WNV) surveillance in mosquitoes and sentinel chickens in Coachella Valley, Riverside County, California, USA, 2015. A) Vector abundance (upper panel) from the same locations in all of Riverside County at bimonthly intervals during 2010–2014 (gray line) and in 2015 (black line), and infection rates for WNV (middle) and SLEV (lower) based on maximum likelihood estimates (black lines) with 95% CI (gray shading) in female Culex tarsalis and Cx. quinquefasciatus mosquitoes collected in CO2 and gravid traps and number of sentinel chicken seroconversions. B) Geographic locations of SLEV (black) and WNV (gray) activity identified by viral RNA detection in mosquito pools (circles) or sentinel chicken seroconversions (squares), July–October 2015.
1These authors contributed equally to this article.