Ehrlichiosis is a bacterial disease, accompanied by fever, caused by a group of intracellular parasites belonging to the Rickettsiaceae family, which are well known in veterinary medicine.
Ticks are among the primary vectors of the disease. The reservoirs of infection have not been clearly identified, but are likely to include dogs and wild animals.
After an incubation period of 7-21 days, the disease manifests itself with flu-like symptoms and, especially in children, is accompanied by measles-like rashes. It usually has a favourable course, especially in children and younger patients, even without treatment. Adults and elderly people may develop (sometimes severe) kidney, vascular and brain complications.