Equine Neurological Disease Conditions Prevention Information

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•   Dodgeville Veterinary Service - EPM in Horses EPM is an infectious, degenerative protozoal disease of the central nervous system of the horse. The causative agent of EPM has been identified as Sarcocystis neurona. The disease is not transmitted from horse to horse. Rather, the protozoa are spread by the definitive host, opossums, which acquire the organism from infected birds. •   EPM - and the Prospects for an Effective Vaccine Equine Protozoal Myelitis - and the Prospects for an Effective Vaccine. During the past decade, equine protozoal myeloencephalitis (EPM), caused by the protozoan parasite Sarcocystis neurona, has been one of the most visible and controversial diseases in the area of equine health. •   EPM - Equine Protozoal Myelitis EPM is a debilitating neurologic disease of horses. It can affect the brain, brainstem, spinal cord or any combination of these three areas of the central nervous system. Clinical signs may suggest focal or multifocal disease, which means the disease may affect a very small (focal) part of the central nervous system (CNS) or may parts of the CNS (multifocal). •   Equine Protozoal Myelitis, a growing EPM is a neurological disease caused by a small single-celled protozoal parasite called Sarcocystis neurona. This organism does not spread from horse to horse. Horses are infected by eating feed or drinking water contaminated by infected opossum feces.