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Bot GPT 3.5 The three main groups of Rickettsia are:
1. Spotted Fever Group (SFG) Rickettsia: This group includes species such as Rickettsia rickettsii, which causes Rocky Mountain spotted fever, and Rickettsia conorii, which causes Mediterranean spotted fever.
2. Typhus Group (TG) Rickettsia: This group includes species such as Rickettsia typhi, which causes murine typhus, and Rickettsia prowazekii, which causes epidemic or louse-borne typhus.
3. Scrub Typhus Group (STG) Rickettsia: This group includes species such as Orientia tsutsugamushi, which causes scrub typhus.