Wyoming State Veterinarian, Jim Logan reports that diagnostic tests at the Wyoming State Veterninary Laboratory have confirmed a case of Equine Herpes Virus One neurologic syndrome (EHM) in a horse from Johnson County, Wyoming.
Wyoming requires all horses to be inspected by a veterinarian 72 hours before entering the state
The horse has been isolated from other horses on the premises and the location is under quarantine, Logan said in a media release. Another horse from the same place was destroyed because of symptoms of the virus.
Logan said there is little reason to cancel horse events or restrict movement of horses other than those under quarantine, since this appears to be an isolated incident.
The Johnson County incident, he said, is not related to the Ogden, Utah, cutting horses event, which led to a multistate outbreak in May.
At least a dozen horses have been destroyed.
The disease is not uncommon or new and has been reported in Wyoming in the past, he said. In addition to causing neurologic syndrome, the virus can lead to respiratory symptoms, weak foals, late-term abortion in pregnant mares and death.