EHM in Pennsylvania Horses: Snyder County Facility Quarantined

Two horses have been euthanized, and the eight horses remaining on the premises are being monitored for clinical signs of EHV-1 infection.
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EHM in Pennsylvania Horses
In many horses, the first or only sign of EHV-1 infection is fever, which can go undetected. | Photo: Kevin Thompson/The Horse

The Equine Disease Communication Center (EDCC) reported Dec. 10 that, on Dec. 7, the Pennsylvania Veterinary Laboratory, in Harrisburg, confirmed equine herpesvirus myeloencephalopathy (EHM), the neurologic form of equine herpesvirus-1 (EHV-1) at a Snyder County facility.

The EDCC said one affected horse was exhibiting hind-limb ataxia (incoordination) and subsequently tested positive for EHV-1 (G-strain).

“As of Dec. 10, two horses were affected and both horses have been euthanized at this premises,” the EDCC said. “The premises, a pleasure horse barn in Snyder County, Pennsylvania, has been quarantined by the Pennsylvania Department of Agriculture Bureau of Animal Health

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Written by:

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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