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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Equine Infectious Anemia

San Joaquin County, CA

Outbreak Identifier: 6773

Alert ID: 4270

March 21, 2025

Outbreak Update

Source: California Department of Food and Agriculture

Number Confirmed: 2;
Number Exposed: 27;

Horse 1:
Age: 3; Gender: Mare; Breed: Quarter Horse (QH); Usage: Racing; Confirmation Date: 3/20/2025;

Comments: One of the twenty-four (24) exposed horses on the home premises tested positive for EIA, a 3–year–old Quarter Horse mare. The other twenty-three (23) potentially exposed horses on the home premises have initially tested negative for EIA and will remain under quarantine until their sixty (60) day retest.;
Previous Alerts: 4266

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