PULLMAN, Wash. (AP) -- The Washington State University College of Veterinary Medicine has confirmed two more horses with Equine Herpes Virus. That brings to six the number of confirmed cases in the state.
Both horses in the new cases are patients in the Veterinary Teaching Hospital in Pullman and are being held in isolation.
Horse herpes is very contagious and horse events across the state are being canceled because of this outbreak.
The disease cannot be transmitted to humans but is easily spread among horses, alpacas and llamas.
Horses in Oregon, Texas, California, Utah New Mexico and Colorado have also been diagnosed with the disease.