An infectious disease of cattle and sheep caused by Anaplasma phagocytophila (called also Rickettsia bovina and R. ovina or Cytoectes phagocytophila). The organism is a parasite of white blood cells and the disease is characterized by fever, polypnea and abortion. Called also ehrlichosis, Ondiri disease, bovine petechial fever.
- central European t. fever — a meningoencephalitis of humans caused by a flavivirus which is present in the milk of ruminants although the principal reservoir is the tick Ixodes ricinus.




