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

Riverside County, CA

Outbreak Identifier: 5086

Alert ID: 2437

February 25, 2022

Outbreak Update

Source: California Department of Food and Agriculture

Number Confirmed: 21;
Number Suspected: 5;
Facility Type: Showgrounds;
Notes: Update 2/25/22 previous alerts: 2416, 2424, 2430, 2432, 2436: Two (2) additional horses that had attended the event in Riverside county and had subsequently returned to their home premises, or were exposed to horses that had returned home from the Riverside county event premises, displaying fever only with no neurologic signs were confirmed positive for EHV-1. The horses are located in Los Angeles and Riverside counties. There were no additional horses on the index event premises that were confirmed positive for EHV-1 today. To date, there have been three (3) confirmed EHM cases (EHV-1 infection with neurological signs) and eighteen (18) confirmed EHV-1 fever-only cases associated with this incident. CDFA continues to be on site at the event premises and is actively monitoring the situation.;

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