Opossums, Horses, and EPM
Understanding Equine Protozoal Myelitis by R. Paul Schwab, DVM Equine Protozoal Myelitis, or EPM, is a neurologic disease of horses caused by a parasite called Sarcocystis neurona, or less frequently by Neospora hugesi. Horses acquire the parasite from ingesting feed or water contaminated with feces of infected opossums. The migrating …