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

Sonoma County, CA

Outbreak Identifier: 4123

Alert ID: 1621

April 13, 2020

Confirmed Case(s) - Official Quarantine

Source: California Department of Food and Agriculture

Number Confirmed: 1;
Number Exposed: 48;
Age: 10; Gender: Mare; Breed: Warmblood (WB); Onset of Clinical Signs: 4/6/2020;
Clinical Signs: Ataxia, Dribbling Urine, Nasal Discharge, Afebrile; Confirmation Date: 4/8/2020; Horse Status: Affected And Alive;
Notes: A 10-year-old Warmblood mare displaying neurologic signs has been confirmed positive for Equine Herpesvirus-1. The mare is quarantined and isolated at a referral hospital where she is receiving care. The Sonoma County home premises containing 48 horses is quarantined with enhanced biosecurity measures and twice daily temperature monitoring of all horse. CDFA will continue to oversee the situation. There is no link between this premises and the current EHV-1 quarantine premises in Alameda county.;

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