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.

Disease

Outbreak States

Start Date

End Date

Equine Infectious Anemia

San Joaquin County, CA

Outbreak Identifier: 6791

Alert ID: 4287

April 01, 2025

Outbreak Update

Source: California Department of Food and Agriculture

Number Confirmed: 2;
Number Exposed: 27;
Number Euthanized: 2;
Comments: A confirmed EIA positive equid must be euthanized or quarantined for life 200 yards away from any EIA negative equid as per USDA EIA program rules. Euthanasia was elected for these two cases and was witnessed by CDFA veterinarians on March 25, 2025. The remaining twenty-three (23) potentially exposed horses and the four (4) dam’s side foals on the home premises will remain under quarantine until their sixty (60) day retest.;

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