EHM in Washington State Gelding

A horse from Thurston County, Washington, is in quarantine due to neurologic herpesvirus.
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Washington State Thurston County map

One gelding in Thurston County, Washington, was confirmed with EHM and 80 horses were exposed.

On April 19, the Washington Department of Agriculture confirmed a case of equine herpesvirus myeloencephalopathy (EHM) in Thurston County.

The affected 19-year-old gelding had onset of clinical signs on April 16. Clinical signs included hind limb ataxia and loss of tail tone. The gelding was referred to Oregon State University Vet Hospital and is recovering.

The state has quarantined the gelding's premises, which has 80 horses on the property.

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