Equine Herpes Myeloencephalopathy (EHM) Updates:
NEW: EHV-1 Quarantine in Sonoma County
March 22, 2021: No additional cases to report. CDFA continues to monitor the situation closely.
March 16, 2021: A 21-year-old Warmblood mare from Sonoma County displaying neurological signs was confirmed positive for Equine Herpesvirus-1 (neuropathogenic strain) on March 15th; the horse is alive and is being treated in isolation at a veterinary hospital. Horses on the home premises have been quarantined with enhanced biosecurity measures and twice daily temperature monitoring. There is no known risk of exposure out of this facility to any local events. The clinical horse has no recent travel history and no links to any other EHV-1 cases. CDFA will continue to actively monitor exposed horses. https://www.cdfa.ca.gov/ahfss/animal_health/equine_herpes_virus.html
