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

Alameda County, CA

Outbreak Identifier: 5056

Type: EHV-1

Alert ID: 2402

January 27, 2022

Quarantine Released

Source: California Department of Food and Agriculture

Number Confirmed: 1;
Number Exposed: 27;
Facility Type: Racetrack;
Age: 8; Gender: Mare; Breed: Thoroughbred (TB); Usage: Racing; Onset of Clinical Signs: 1/12/2022;
Clinical Signs: Ataxia, proprioceptive deficits, leaning; Confirmation Date: 1/19/2022;
Notes: Update: 1/27/22 Original Alert ID: 2397: The quarantine at the Alameda County racetrack has been released as there were no additional clinical signs or cases confirmed during the fourteen (14) days following removal of the index case from the premises. The index case remains under quarantine at her home premises in Sonoma County pending two (2) consecutive negative tests seven (7) days apart. CDFA continues to monitor the situation closely.

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