<prompt> Rickettsial agent of Epidemic typhus isR. prowazekiiR. typhiR. tsutsugamushiR. canorii  <response>: R-prowazekii 239-PK 262- Park 20thDiseaseRickettsial agentInsect vectorsMammalian reservoirsITyphus group a. Epidemic typhusR. prowazekiiLouseHumansb. Murine typhusR. typhiFleaRodentsc. Scrub typhusR. tsutsugamushiMiteRodentsIISpotted fever group a. Indian tick typhusR. conoriiTickRodents, dogsb. Rocky Mountain spotted feverR. rickettsiiTickRodents, dogsc. Rickettsial poxR. akariMiteMiceIIIOthers a. Q-feverC. burnetii-Cattle, sheep, goatsb. Trench feverRochalimaeaquintanaLouseHumans 