EHM Confirmed in Scott County, Minnesota

The horse was euthanized on Feb. 12 after developing neurologic signs.
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The Minnesota Board of Animal Health (MBAH) has reported that a horse in Scott County has tested positive for equine herpesvirus myeloencephalopathy (EHM), the neurologic form of equine herpesvirus-1 (EHV-1).

In a statement on the organization’s website, the MBAH said the horse was stabled at Dark Horse Farm in Prior Lake.

"The horse became ill on Friday, Feb. 6," the statement said. "It exhibited neurological signs including ataxia (incoordination) and urinary incontinence. It was then moved to Cleary Lake Veterinary Clinic in Prior Lake where it was held in isolation for treatment until test results were completed. Infection with equine herpesvirus type 1 (EHV-1) was subsequently confirmed by polymerase chain reaction tests performed at Cornell University. The horse was euthanized on Thursday, Feb. 12."

The MBAH has placed the other horses residing at the affected horse’s home stable under a quarantine for at least 21 days. Those animals will be monitored closely for fever or other signs of EHV-1

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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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