DES MOINES, Iowa (AP) – A virus known for attacking a horse’s nervous system has been confirmed at a stable in Iowa’s Warren County.

The Iowa Department of Agriculture said Wednesday that the stable has several confirmed cases of a neurological disease associated with Equine Herpesvirus infections. Officials say the disease poses no threat to humans.

The disease was detected at the Warren County stable when horses began to show symptoms including fever, decreased coordination, lethargy and inability to rise.

A news release says the horses are being monitored and aren’t permitted to leave the stable. The virus is spread through direct horse-to-horse contact. Objects contaminated with the virus, such as grooming equipment and feed and water buckets, also contribute to its transmission.