CHEYENNE, Wyo. (AP) — A horse in Johnson County has been euthanized after testing positive for an incurable and potentially deadly virus that appears in Wyoming only rarely.
The Wyoming Livestock Board says five other horses are being quarantined for 60 days. Those horses have tested negative for equine infectious anemia but will be retested.
Equine infectious anemia infects horses, mules and donkeys, causing them to become weak and lethargic. Wyoming State Veterinarian Jim Logan said Monday the virus occurs worldwide but is somewhat unusual in Wyoming, with isolated cases occurring in the state every two or three years.
Typically the disease is transmitted by biting flies.
State livestock officials aren't identifying the owners of the euthanized or quarantined horses. Logan says veterinarians initially diagnosed the disease June 18 and euthanized the horse Wednesday.