A species of gram-negative bacteria in the genus NEORICKETTSIA, family ANAPLASMATACEAE, causing Sennetsu fever and found in the FAR EAST and SOUTHEAST ASIA.

A species of gram-negative bacteria in the genus NEORICKETTSIA, family ANAPLASMATACEAE.

Genus of gram-negative, intracytoplasmic bacteria that are found primarily in VACUOLES of MONOCYTES in the BLOOD and MACROPHAGES of lymphoid or other tissues of DOGS; HORSES, and humans. (From Int. J. Syst. Evol. Microbiol. (2001) 51:2145-2165)

A family of small, gram-negative organisms, often parasitic in humans and other animals, causing diseases that may be transmitted by invertebrate vectors.

Infections with bacteria of the family ANAPLASMATACEAE.

Infections with bacteria of the family RICKETTSIACEAE.

Small, often pleomorphic, coccoid to ellipsoidal organisms occurring intracytoplasmically in circulating LYMPHOCYTES. They are the etiologic agents of tick-borne diseases of humans; DOGS; CATTLE; SHEEP; GOATS; and HORSES.