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Horse with EPM who cannot stand up straight

Equine Protozoal Myeloencephalitis (EPM)

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What is EPM? EPM is a parasitic infection of the central nervous system caused by a single-celled microscopic organism called a protozoa (protozoa are not worms and are not killed by worming). The protozoa associated with most EPM infections appears to be Sarcocystis Neurona (S. neurona). Other protozoa also may be involved, including Neospora Hughesi (N. hughesi).
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