Outbreaks | Equine Disease Communication Center

Updates on current disease outbreaks are listed here as they occur and will include the date listed, disease name, location and current status. Specific premises will not be named but the general location by town, county and state will be listed. When locations, events or horses are at risk they will be listed. Updates will be posted as they are received.

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West Nile Virus

Riverside and Tehama Counties, CA

Alert ID: 661

September 15, 2017

Source: California Department of Food and Agriculture

The California Department of Food and Agriculture confirms two cases of West Nile Virus. An unvaccinated 4 year old Andalusian mare in Riverside County and an unvaccinated 12 year old Quarter Horse gelding in Tehama County displaying neurologic signs tested positive for WNV. The Quarter Horse gelding was euthanized due to the severity of the clinical signs. The Andalusian mare is recovering. For 2017, a total of 13 cases of equine WNV have been confirmed in California. For more information visit: https://www.cdfa.ca.gov/ahfss/animal_health/WNV_Info.html

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