California Horse Euthanized Due to EHM
Map of Los Angeles county, CA
A vaccinated, 33-year-old horse in Los Angeles County, California, tested positive for EHM and was euthanized. | Wikimedia Commons

On Oct. 6, the California Department of Food and Agriculture (CDFA) confirmed a vaccinated 33-year-old Quarter Horse gelding in Los Angeles County positive for equine herpesvirus myeloencephalopathysecondary to equine herpesvirus-1. He presented with neurologic signs and fever beginning on Oct. 2, and was subsequently euthanized. The CDFA implemented increased biosecurity measures and mandated an official quarantine for the 45 potentially exposed horses on the property. 

EDCC Health Watch is an Equine Network marketing program that utilizes information from the Equine Disease Communication Center (EDCC) to create and disseminate verified equine disease reports. The EDCC is an independent nonprofit organization that is supported by industry donations in order to provide open access to infectious disease information.

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