Two cases of equine herpesvirus-1 (EHV-1) have been reported in Ohio horses.

In a statement on its Facebook page, Hagyard Equine Medical Center, in Lexington, Kentucky, reported that two cases had been confirmed in Muskingum County, in east central Ohio.

"Both cases were at a barrel competition in Springfield, Ohio, March 6-7," the post read. "The farm of origin is under quarantine with one of the horses deceased and the other currently responding to treatment. Both of these cases started with a fever and later developed hind-end paralysis.

"To date no other animal on the farm of origin has shown signs of illness except one with a single fever spike," the statement continued. "If you attended this particular show it is recommended that you contact your veterinarian for advice."

Herpesvirus is highly contagious among horses and can cause a variety of ailments in equids, including rhinopneumonitis (a respiratory disease usually found in young horses), abortion in broodmares, and myeloencephalopathy (the neurologic form). In many horses, fever is the only sign of EHV-1 infection, which can go undetected.

[brightcove videoid="3027535698001" title="Health Alert: Equine Herpesvirus"]

In addition to fever, other common signs of EHV-1 infection in young horses include cough, decreased appetite, depression, and a nasal discharge. Pregnant mares typically show no signs of infection before they abort, and abortions usually occur late in gestation (around eight months), but can be ear