Update on EHV-1 Virus 20 horses infected in California

       May 31 Sacramento ~  Full updated report from California Department of Food and Agriculture at:
California EHV-1 Causing EHM Disease Update as of 4 pm 5/31/2011 

California has one new confirmed case of Equine Herpes Myeloencephalopathy (EHM) caused by EHV-1. There are now 20 confirmed EHV-1/ EHM cases in the state.

  • The suspect case reported on 5/28 with low grade fever and moderate compatible neurologic signs has been confirmed positive for EHM.
  • The positive confirmed cases are located in the following 13 counties: Amador(1), Colusa(1), Glenn(3), Kern(2), Los Angeles(1), Marin(1), Napa(1), Placer (3), Plumas(1), Sacramento (1), Shasta(1), Stanislaus(3) and Ventura(1).
  • Sixteen(16) of the confirmed positive EHV-1/EHM CA cases participated in the National Cutting Horse Association’s Western National Championships in Ogden, Utah.
  • Two (2) of the confirmed positive EHV-1/ EHM CA cases participated only in the Kern County Cutting Horse Event on May 13th in Bakersfield, CA.
  • Two (2) of the confirmed positive EHV-1/EHM CA cases was an exposed horse to an Ogden, UT participant.
  • Two (2) confirmed positive EHM horses were euthanized after showing severe neurological signs associated with EHM.
  • All positive confirmed EHV-1/EHM cases are under a State Quarantine.

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