Eastern and Western Equine Encephalitis
Eastern and Western Equine Encephalitis Cases - 2006
- 2008 equine encephalitis cases - reports and maps showing the number of equine cases of equine encephalitides, including West Nile virus, by State and County
- Annual Summary Reports - Numbers of confirmed eastern equine encephalitis cases by State and County
- Eastern equine encephalitis maps, 2006 - 2007. Annual trends in U.S. distribution of eastern equine encephalitis cases.
- State web sites with equine eastern or western equine encephalitis case reports
- USGS Eastern and Western Equine Encephalitis Maps - USGS Disease Maps Web site, produced in coopration with CDC and ArboNET, includes current and historic maps of veterinary, human, bird, sentinel, and mosquito EEE and WEE cases by state and county. Note that veterinary maps on this site include data for several animal species in addition to horses (e.g., dogs, rodents).
Surveillance Information
Reports of equine cases of arboviral (i.e., arthropod-borne virus) diseases, including eastern and western equine encephalitis, are reported to ArboNet, an electronic-based surveillance and reporting system used to track and report arboviral activity. ArboNet captures laboratory-confirmed positive cases in humans, horses, other mammals, birds and mosquitoes across the United States. Equine case-finding varies by State, but primarily relies on passive reporting from private practitioners and diagnostic submissions. In some States, reporting is mandatory.