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

Sacramento County, CA

Outbreak Identifier: 6332

Alert ID: 3811

August 03, 2024

Confirmed Case(s) - No Quarantine

Source: California Department of Food and Agriculture

Number Confirmed: 1;
Number Exposed: Unknown;

Horse 1:
Age: 3; Gender: Gelding; Breed: Thoroughbred (TB); Onset of Clinical Signs: 7/24/2024; Clinical Signs: ataxia, muscle fasciculations, fever, facial paralysis; Confirmation Date: 8/2/2024; Horse Status: Affected And Alive; Vaccination Status: Unvaccinated;

Comments: The third (3rd) case of West Nile Virus in California in 2024 was confirmed in Sacramento County. On August 2, 2024, an unvaccinated 3-year-old Thoroughbred gelding in Sacramento County displaying neurologic signs was confirmed positive for West Nile Virus. The gelding is alive and recovering.;

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