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Equine Protozoal Myeloencephalitis

Exploring Neurologic Disease

Equine Protozoal Myeloencephalitis (EPM) is the most common neurologic disease seen in horses referred to Ohio State. In fact, more than 10% of equine cases presented to the Veterinary Medical Center at Ohio State have neurologic disease.

Horse owners in Ohio may spend as much as an estimated $4 million a year in direct costs for diagnosis and treatment of this disease. Since 1993, the American Live Stock Insurance Company of Geneva, Illinois has funded most of the EPM research.