California has one new confirmed case of Equine Herpes Myeloencephalopathy (EHM) caused by EHV-1. There are 18 confirmed EHM cases in the state.
The positive confirmed cases are located in the following 12 counties: Amador(1), Glenn(2), Kern(2), Los Angeles(1), Marin(1), Napa(1), Placer (3), Plumas(1), Sacramento (1), Shasta(1), Stanislaus(3), Ventura(1)
Sixteen(16) of the confirmed positive EHM CA cases participated in the National Cutting Horse Association’s Western National Championships in Ogden, Utah.
Two (2) of the confirmed positive EHM CA cases participated only in the Kern County Cutting Horse Event on May 13th in Bakersfield, CA.
One confirmed positive EHM horse was euthanized after showing severe neurological signs associated with EHM.
Three (3) confirmed positive EHM horses are being treated at the University of California Veterinary Medical Teaching Hospital in Davis.
Seven (7) positive horses have displayed neurological signs. Ten (10) cases have displayed an increased temperature. One horse has not displayed any clinical signs.
All positive confirmed EHM cases are under a State Quarantine.
California Department of Food and Agriculture is working with Animal Health Officials in the western states to monitor the disease outbreak and investigate the source of the disease outbreak.