Neurologic Herpesvirus in Washington State

A case of neurologic equine herpesvirus has been confirmed in King County, Washington, with two additional premises quarantined.

One horse was confirmed with neurologic herpesvirus and another is suspect in King County, Washington.

The Washington State Department of Agriculture reported one confirmed and one suspect case of neurologic herpesvirus on a property in King County. Twenty-nine horses have been exposed.

The positive case was a 17-year-old draft-cross gelding that had onset of clinical signs on April 23 that included ataxia, difficulty standing, dribbling urine and nasal discharge. The vaccinated horse was alive at the time of this report. 

An additional horse had a fever and is being tested.

The barn is under quarantine and is being monitored by a private veterinarian. 

Information for this report was provided by the Equine Disease Communication Center.

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