From IDWiki


  • A genus of obligate mostly-tick-borne intracellular Gram-negative bacteria
Species Disease Vector Distribution
Typhus Group
R. prowazekii epidemic typhus body louse
R. typhi murine/endemic typhus rat/cat fleas
Spotted Fever Group
R. rickettsii Rocky Mountain spotted fever (RMSF) Dermacentor variabilis ticks eastern, central, and Pacific coast of US
Dermacentor andersoni ticks western US
Rhipicephalus sanguineus ticks Mexico and southern US
Amblyomma cajennense ticks Central and South America
R. parkeri American tick-borne fever Amblyommma maculatum ticks southern US
Amblyomma triste ticks Uruguay, Brazil, and Argentina
R. conorrii Mediterranean spotted fever Rhipicephalus sanguineus ticks
R. japonica Oriental spotter fever
R. heilongiangensis Far Eastern spotted fever eastern Russia, Thailand, and China
R. africae African tick bite fever Amblyomma ticks
R. slovaca tick-borne lymphadenopathy (TIBOLA) Dermacentor marginatus ticks
Transitional Group
R. akari rickettsialpox Liponyssoides sanguineus house mouse mites
R. australis North Queensland tick typhus
R. felis flea-borne spotted fever
Ancestral Group
Rickettsia bellii
Rickettsia canadensis
Other Rickettsiae
Orientia tsutsugamushi scrub typhus chiggers
Ehrlichia species human monocytotropic ehrlichiosis Amblyomma americanum and other ticks
Anaplasma species human granulocytic anaplasmosis Ixodes scapularis and Ixodes pacificus ticks
Neorickettsia helminths
Wolbachia helminths and arthropods


Spotted Fever Group