May 13, 2015---DES MOINES – The Iowa Department of Agriculture and Land Stewardship today announced that a horse stable in Warren County has had several confirmed cases of Equine Herpesvirus Myeloencephalopathy (EHM). EHM is the neurological disease associated with Equine Herpesvirus (EHV). There is no human health threat from the disease. All horses at the facility are being monitored for the disease and are not permitted to leave the site. EHV is spread by direct horse-to-horse contact or through contact with objects contaminated with the virus. This can include tack, grooming equipment and feed and water buckets. Signs of the disease include fever, decreased coordination, failure to maintain balance, lethargy and inability to rise.