The Colorado Department of Agriculture State Veterinarian’s Office was recently notified of an equine neurologic case in Weld County. The State Veterinarian’s office has been collaborating with the CSU Veterinary Teaching Hospital and Veterinary Diagnostic Laboratory, the Colorado Horse Park, and private practicing veterinarians involved in the case.
The horse was on site for an event at the Colorado Horse Park from June 22 until June 25, before returning to its home in Weld County. Two days after returning home, the horse began displaying neurologic signs consistent with Equine Herpes Myeloencephalopathy, a disease caused by EHV-1 virus. CSU Veterinary Diagnostic Laboratory completed the initial diagnostics which were inconclusive. Follow-up diagnostics showed a low viral load of EHV-1 on one nasal swab. Two whole blood samples, as well as one CSF sample, were negative for EHV. The horse remains hospitalized at CSU VTH with continued supportive therapy.