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

Orange, Los Angeles, San Mateo, Riverside County, CA

Outbreak Identifier: 5119

Alert ID: 2474

March 10, 2022

Outbreak Update

Source: California Department of Food and Agriculture

Notes: Orange county #1 (original EDCC notification #2438): 22 confirmed (2 EHM, 20 fever) – no change

• Orange county #2 (did not look like this was posted individually): 12 confirmed (2 EHM, 10 fever/mild signs)- no change

• Orange county #3 (original EDCC notification #2455): 7 confirmed (1 EHM, 6 fevers)

• Los Angles county (original EDCC notification #2439): 1 confirmed (1 EHM)- quarantine release

• San Mateo county #1 (original EDCC notification #2405): 36 confirmed (4 EHM, 32 fevers)- no change

• San Mateo county #2: 2 confirmed (1 EHM, 1 fever) - New Outbreak

• Riverside county (original EDCC notification #2416): 34 confirmed (3 EHM, 31 fevers);- no change

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