title: Epidemiology of equine protozoal myeloencephalitis in North America based on histologically confirmed cases. A report.
abstract: Following a workshop on equine protozoal myeloencephalitis (EPM) convened at the Veterinary Medical Forum of the American College of Veterinary Internal Medicine in 1988, this survey of EPM in North America was developed. It is based upon 364 histologically confirmed case records from California, Florida, Illinois, Kentucky, New York, Ohio, Oklahoma, Ontario, Pennsylvania, and Texas up to 1988. The highest rate of infection was found in young Thoroughbred, Standardbred, and quarter horses. Differences in geographic location, sex, and month (season) of infection were not discernible. This report, the first comprehensive survey of EPM in North America, is intended to serve as a basis for evaluating future changes in prevalence and spread of EPM.
authors.affiliation: Zoonotic Diseases Laboratory, U.S. Department of Agriculture, Beltsville, MD 20705.
authors.forename: R
authors.initials: R
authors.lastname: Fayer
authors.forename: I G
authors.initials: IG
authors.lastname: Mayhew
authors.forename: J D
authors.initials: JD
authors.lastname: Baird
authors.forename: S G
authors.initials: SG
authors.lastname: Dill
authors.forename: J H
authors.initials: JH
authors.lastname: Foreman
authors.forename: J C
authors.initials: JC
authors.lastname: Fox
authors.forename: R J
authors.initials: RJ
authors.lastname: Higgins
authors.forename: S M
authors.initials: SM
authors.lastname: Reed
authors.forename: W W
authors.initials: WW
authors.lastname: Ruoff
authors.forename: R W
authors.initials: RW
authors.lastname: Sweeney
mesh_terms: D000818:Animals; D004679:Encephalomyelitis / Q000453:epidemiology / Q000662:veterinary*; D005260:Female; D006734:Horse Diseases / Q000453:epidemiology*; D006736:Horses; D008297:Male; D009864:Ontario / Q000453:epidemiology; D015995:Prevalence; D011528:Protozoan Infections / Q000453:epidemiology; D011529:Protozoan Infections, Animal; D012189:Retrospective Studies; D014481:United States / Q000453:epidemiology