Cheyenne, WY (KGWN) - A case of Equine Infectious Anemia or EIA was found in one horse located in Johnson County forcing the horse to be euthanized.
Cases of the disease are not common in Wyoming, but are very serious when they occur.
"Basically it can cause horses to become anemic. It can also cause horses to lose weight and it obviously can pose a threat to other horses," said Dr. Bob Meyer, Assistant State Veterinarian for the Wyoming Livestock Board.
The disease is not always fatal. In fact, a horse can be carrying it and not show any signs of having the virus.
The disease is often transmitted when an infected horse is bitten by deer and horseflies then transmits it to another horse.
Dr. Meyer says despite the recent discovery there is not much reason to worry about horses at Frontier Days.
"For horses coming into Cheyenne Frontier Days, usually they are required to be Coggins tested. This, the test for this disease, negative before they arrive," Meyer said.
The virus can only infect horses and other equine. The disease cannot be transmitted to humans, dogs, cats or even cattle.