For the past few weeks we’ve been serializing a chapter entitled “Piaff” from the new book Equine ER: Stories from a Year in the Life of an Equine Veterinary Hospital by Leslie Guttman (Eclipse Press, 2009). Piaff, a Dutch warmblood gelding, had a devastating case of equine protozoal myeloencephalitis (EPM), an infection of a horse’s central nervous system, from which he did not survive. (See previous...