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Western Equine Encephalitis

Western equine encephalitis (WEE) is an arbovirus (arthropod borne virus) transmitted by mosquitoes and was first identified in the 1930s as an important cause of encephalitis in horses; however, humans can also contract disease as well. Most reported cases of WEE infection are west of the Mississippi River. WEE is not commonly reported in West Virginia residents.

Reporting Guidelines


Current Case Definition

Required Forms

LHD Tools

Other Links

Vectorborne Disease Summary through July 24, 2015 The most current surveillance data on mosquito and tickborne diseases in WV.
West Virginia Zoonotic Disease Surveillance Summary, 2014 Click at left to view the 2014 surveillance information about mosquito-borne, tickborne, and other reportable zoonotic diseases.

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