Sacramento County EHV Quarantine Released

No additional EHM cases have been identified since the removal of the positive horse on April 21.
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A Sacramento County, California, facility has been released from a quarantine put in place after a horse residing there tested positive for equine herpesvirus-1 (EHV-1).

The California Department of Food and Agriculture (CDFA) reported April 28 that a 15-year-old Warmblood mare “initially showed signs of colic on Friday, April 21, and was transported to a veterinary clinic for veterinary care. While in isolation at the veterinary clinic, the mare started displaying neurologic signs, became recumbent, and was subsequently euthanized due to the severity of signs. Quarantine biosecurity measures were immediately implemented at the home premises.

“With neurologic signs and detection of EHV-1, this horse meets the case definition for an equine herpesvirus myeloencephalopathy (EHM) case, which is reportable and actionable in the state of California,” the CDFA continued. “CDFA issued a quarantine for 31 exposed horses which requires implementation of biosecurity measures including twice daily temperature taking and observation of horses. No exposed horses have displayed signs of disease.”

On May 5, the CDFA reported that “as no additional cases have been identified since the removal of the positive index equine herpesvirus myeloencephalopathy horse on April 21, 2017, the Sacramento County premises has been released from quarantine

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Erica Larson, former news editor for The Horse, holds a degree in journalism with an external specialty in equine science from Michigan State University in East Lansing. A Massachusetts native, she grew up in the saddle and has dabbled in a variety of disciplines including foxhunting, saddle seat, and mounted games. Currently, Erica competes in eventing with her OTTB, Dorado.

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