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

Orange County, CA

Outbreak Identifier: 6544

Alert ID: 4020

October 04, 2024

Confirmed Case(s) - Official Quarantine

Source: California Department of Food and Agriculture

Number Confirmed: 12;
Number Suspected: 10;
Number Exposed: 10;
Number Euthanized: 7;
Comments: As of Oct. 3, Seven (7) out of the remaining nine (9) potentially exposed horses at Los Alamitos Racetrack were confirmed positive for EIA. 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 cases and witnessed on October 2nd and 3rd by CDFA veterinarians. The 3 remaining potentially exposed horses will remain under quarantine until their sixty (60) day retest samples are completed as per CDFA and USDA program requirements. Epidemiological tracing is ongoing with CDFA actively monitoring the situation. The original horse was euthanized Sept. 24.;

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