Canadian Animal Health Surveillance System (CAHSS)

Below are details pertaining to an Equine Herpesvirus (neurologic) disease alert published by the CAHSS:

Disease: Equine Herpesvirus (neurologic)
Date: June 29, 2018
Location: Saskatchewan
Status: Ongoing
Breed: QH
Sex: Gelding
Age: 19 years
Vaccination history: Unvaccinated

History: Presented with hind end ataxia of five days duration, no improvement with anti-inflammatory treatment x 2 days. High antibody titre as per EHV1/4 ELISA, negative PCR.

Six other horses on premises, all tested negative on PCR. None of the horses have been moved off the premises since the diagnosis was made; however, the positive horse was present at a roping/rodeo event in Alberta just prior to diagnosis. Exact event is unknown (according to, possible events include Wainwright Stampede, Guy Weadick Days (High River), and Sundre Pro Rodeo).

Contact: Wendy Wilkins, DVM PhD Ph: 306-798-0253

Additional information can be found at Canadian Animal Health Surveillance System.