A private equestrian facility in Park County, Wyoming is under quarantine after one confirmed case of neurologic equine herpesvirus (EHV-1) and five more cases are suspected. According to the Equine Disease Communication Center (EDCC) a total of 42 other horses were exposed.
EHV-1 most often causes mild-to-moderate respiratory illness (rhinopneumonitis), but the infection occasionally leads to the life-threatening neurologic disease equine herpesvirus myeloencephalopathy (EHM). The mechanisms through which EHV-1 produces neurologic disease are not yet understood.
The Wyoming facility is quarantined for 10 days with the affected horses isolated.
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