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

Riverside County, CA

Outbreak Identifier: 7003

Alert ID: 4717

November 18, 2025

Quarantine Released

Source: California Department of Food and Agriculture

Number Confirmed: 1;
Number Exposed: 1;
Number Euthanized: 1;

Horse 1:
Age: 13; Gender: Gelding; Breed: Quarter Horse (QH); Horse Status: Euthanized;

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 this case and was witnessed by CDFA veterinarians on September 5, 2025. The one (1) potentially exposed horses on this premises tested negative on the sixty (60) day retest. Quarantine on this premises has been released.;
Previous Alerts: 4520

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