UPDATE from the Equine Disease Communication Center: As of March 29, 2021, the quarantine on the property has been released since there were no additional cases for fourteen (14) days on the premise.
The California Department of Food and Agriculture (CDFA) confirmed that a private facility in San Bernardino County had two horses exhibit neurologic signs and test positive for equine herpesvirus.
A 10-year-old Arabian gelding displaying neurologic signs was confirmed positive for EHV-1 (non-neuropathogenic strain). At the time of this report the gelding was alive and under veterinary care.
A second horse on the property was exhibiting neurologic signs and tested positive for EHV-1. That horse was euthanized due to the severity of clinical signs.
Following an assessment of the home premises in San Bernardino County by CDFA personnel, 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 equine herpesvirus myeloencephalopathy click here.