<prompt> Rocky mountain spotted fever is caused by -Rickettsia rickettsiiRochalimaea quintanaRickettsia tsutsugamushiCoxiella burnetii  <response>: Ans. is a i.e., Rickettsia Rickettsi DiseaseAgentInsect vectorMammalian reservoir1.Typhus group a. Epidemic typhusR. prowazekiiLouseHumans b. Murine typhus Endemic typhusR. typhiFleaRodents c. Scrub typhusR. tsutsugamushiMiteRodents2.Spotted fever group a. Indian tick typhusR. conoriiTickRodents, dogs b. Rocky mountain spotted feverR. rickettsiiTickRodents, dogs c. Rickettsial poxR. akariMiteMice3.Others a. Q feverC. burnetiiNilCattle, sheep, goats. b. Trench feverRocholimaca quintanaLouseHumans 