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 Herpesvirus- Neurologic

Imperial County , CA

Outbreak Identifier: 4308

Alert ID: 1729

August 04, 2020

Suspected Case - Official Quarantine

Source: California Department of Food and Agriculture

Number Confirmed: 1;
Number Exposed: 3;
Age: 1; Gender: Mare; Breed: Quarter Horse (QH); Onset of Clinical Signs: 7/28/2020;
Clinical Signs: Fever, Bilateral Severe Pelvic Limb Rigidity; Confirmation Date: 8/3/2020; Horse Status: Deceased; Vaccination Status: Vaccinated;
Notes: A 1-year-old Quarter Horse filly in Imperial County displaying acute neurologic signs has been confirmed positive for EHV-4 on August 3^th, 2020. The filly was euthanized, and a quarantine has been issued for the home premises containing three other horses, with enhanced biosecurity measures and twice daily temperature monitoring implemented. The filly attended an event in Riverside County on July 18 and 19^th, and event management has been notified and show participants have been instructed to monitor their horse’s temperatures twice daily. No additional clinical cases have been identified. CDFA will continue to oversee the situation.

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