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

San Bernardino County, CA

Outbreak Identifier: 4620

Alert ID: 1994

March 16, 2021

Confirmed Case(s) - Official Quarantine

Source: California Department of Food and Agriculture

Number Confirmed: 2;
Number Exposed: 22;
Facility Type: Private Facility;
Age: 10; Gender: Gelding; Breed: Arabian;
Clinical Signs: Neurologic Signs; Horse Status: Affected And Alive;
Notes: A 10-year-old Arabian gelding in San Bernardino county displaying neurological signs was confirmed positive for Equine Herpesvirus-1 (EHV-1 non-neuropathogenic strain); the horse is alive and under veterinary care. One additional horse on the property tested positive for EHV-1 with neurological signs and was euthanized due to the severity of clinical signs. Following an assessment of the home premises in San Bernardino County by CDFA personnel, twenty-two (22) potentially exposed equids have been quarantined with enhanced biosecurity measures and twice daily temperature monitoring. This premises is a private facility with no recent movement on or off the property and these cases have no known links to any other EHV-1 cases. CDFA will continue to actively monitor exposed equids. For more information about EHM go to the owner factsheet.

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