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Potomac Horse Fever (PHF) is a potentially-fatal febrile illness affecting horses caused by the intracellular bacterium Neorickettsia risticii. PHF is also known as Shasta River Crud and Equine Monocytic Ehrlichiosis .
N. risticii is the known causative agent of equine neorickettsiosis (also known as Potomac horse fever or PHF), [2] which gets its name from its discovery near the Potomac River in Maryland and Virginia. [3] N. risticii was first recovered from horses in this region in 1984 but was not recognized as the causative agent of PHF until 1979. [3]
Neorickettsia risticii causes Potomac horse fever. Neorickettsia helminthoeca is found in association with the trematode Nanophyetus salmincola, and causes salmon poisoning disease in dogs and other canids. Neorickettsia elokominica causes a similar disease, Elokomin fluke fever, in canids and other species.
Horses generally present with signs of colic before developing profuse, watery, fetid diarrhea. Both infectious and non-infectious causes for colitis exist. In the adult horse, Salmonella, Clostridioides difficile, and Neorickettsia risticii (the causative agent of Potomac Horse Fever) are common causes of colitis.
Pages in category "Horse diseases" ... Potomac horse fever; ... West Nile fever; Western equine encephalitis virus; White line disease;
Chronic: The horse tires easily and is unsuitable for work. The horse may have a recurrent fever and anemia, and may relapse to the subacute or acute form even several years after the original attack. [citation needed] A horse may also not appear to have any symptoms, yet still tests positive for EIA antibodies.
Many additional vaccines may be needed, depending on local conditions and risk, including Rhodococcus equi (strangles), Botulism, or Potomac Horse Fever. [10] As a general rule, a horse or pony that has never had a particular vaccination will be given an initial vaccination and then a booster a few weeks later, then normally once a year after that.
Potomac Horse Fever, an illness affecting horses caused by Neorickettsia risticii. Premier Hockey Federation, a professional women's ice hockey league located in the United States & Canada. Public Health Foundation; Putting Hartlepool First, a localist English political party based in Hartlepool