Confirmed Case(s) – Official Quarantine
Number Confirmed: 1
Number Exposed: 40
Horse 1:
Age: 15
Gender: Mare
Breed: Thoroughbred (TB)
Onset of Clinical Signs: 1/14/2025
Clinical Signs: ataxia, recumbency
Confirmation Date: 1/16/2025
Horse Status: Affected And Alive
Comments: A 15-year-old Thoroughbred mare from San Luis Obispo County displaying neurologic signs was confirmed positive for Equine Herpesvirus Myeloencephalopathy (EHM) secondary to Equine Herpesvirus-1 (EHV-1). The mare is alive and under veterinary care at an off-site veterinary hospital. Forty (40) potentially exposed horses at the home premise in San Luis Obispo County were quarantined on January 17th with enhanced biosecurity measures implemented. There had been no recent history of travel on or off these premises by the clinical horse and no other horses on the home premises currently have any clinical symptoms. CDFA will continue to actively monitor the situation.
For more information, go to https://www.equinediseasecc.org/equine-herpesvirus
See past published Outbreak Alerts: https://nwhorsesource.com/category/news/alerts
Updates on current disease outbreaks are listed on our EDCC website 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. All information is sourced from: http://equinediseasecc.org/alerts/outbreaks
