Los Angeles County EHV Quarantine Released

Officials released the facility from quarantine put in place after two horses there tested positive for EHV-1.
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The California Department of Food and Agriculture (CDFA) has released a Los Angeles County facility from quarantine put in place after two horses there tested positive for equine herpesvirus-1 (EHV-1).

“The last affected horse at this facility has met the negative test requirements and this facility has been released from quarantine,” the CDFA said in a Jan. 31 statement. “We no longer have any equine facilities in Los Angeles County and the State of California under quarantine” for EHV or EHM (equine herpesvirus myeloencephalopathy, in which neurologic signs of disease develop).

The outbreak began Jan. 10 when a 12-year-old Quarter Horse mare displayed severe neurologic signs and was subsequently confirmed positive for “wild-type” (the non-neuropathogenic strain) EHV-1 on nasal swab and blood samples. That horse was euthanized, the CDFA said.

The mare’s home premises of 56 exposed horses was been placed under quarantine. One additional horse—a febrile 32-year-old—subsequently tested positive for wild type EHV-1 in the nasal swab and blood, but did not exhibit neurologic signs

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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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