| has gloss | eng: Potomac Horse Fever (PHF) is a febrile disease affecting horses. It is also known as Shasta River Crud and Equine Monocytic Ehrlichiosis. It was first described in areas surrounding the Potomac River northwest of Washington, D.C., in the 1980s, but cases have been described in many other parts of the United States, such as Minnesota, California, and Pennsylvania. Currently, it is found in more than 40 states within the US, as well as in Canada . Cause The causative agent of PHF is Neorickettsia risticii (formerly Ehrlichia risticii), an intracellular rickettsial bacterium . |
