The following is the etiological agent of Rocky mountain spotted fever:
Rickettsia rickettsii
Rochalimaea quintana
Rickettsia tsutsugamushi
Coxiella burnetii
Ans. is 'a' i.e., Rickettsia Rickettsi SpeciesDiseaseVectorR. ProwazekiiEpidemic typhusLouseR. ProwazekiiBrill Zinsser diseaseLouseR. typhiEndemic typhusRat fleaR. RickettsiaRocky mountain spotted feverTickR. akariRickettsial poxGamasid miteOriental TsutsugamushiScrub typhusTrombiculid mite
Bacteria