Equine Herpes Virus — United States
An equine herpesvirus (EHV) 1-infected horse has been reported in Johnson County [Wyoming]. Laboratory confirmation of a Johnson County horse infected with equine herpesvirus neurologic disease, or equine herpes myeloencephalopathy (EHM), was received by Wyoming Livestock Board (WLSB) staff veterinarians on Thu 4 Apr 2019. The horse has been quarantined to its premise in Johnson County with 19 other horses.
The affected horse began showing neurologic signs, including hind-end weakness, on