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

Tulare County, CA

Outbreak Identifier: 5353

Alert ID: 2735

September 21, 2022

Confirmed Case(s) - No Quarantine

Source: California Department of Food and Agriculture

Number Confirmed: 1;
Age: 8; Gender: Gelding; Breed: Thoroughbred (TB);
Clinical Signs: ataxia (all 4 limbs), hypermetric in front limbs, down/unable to rise; Confirmation Date: 9/19/2022; Horse Status: Euthanized; Vaccination Status: Vaccinated;
Comments: On September 19, 2022, an 8-year-old vaccinated Thoroughbred gelding in Tulare County, displaying acute neurological signs, was confirmed positive for West Nile Virus. He was euthanized due to the severity of clinical signs. This is the ninth case of equine WNV confirmed in California in 2022. For more information about West Nile Virus go to: WNV factsheet.

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