title: A reference, inactivated, epidemic typhus vaccine: clinical trials in man.
mesh_terms: D002986:Clinical Trials as Topic; D003168:Complement Fixation Tests; D005069:Evaluation Studies as Topic; D006801:Humans; D012283:Rickettsia prowazekii / Q000276:immunology; D012290:Rickettsial Vaccines / Q000592:standards*; D014438:Typhus, Epidemic Louse-Borne / Q000517:prevention & control*; D014612:Vaccines / Q000592:standards*; D014613:Vaccines, Attenuated / Q000592:standards
chemical_list: D012290:Rickettsial Vaccines; D014612:Vaccines; D014613:Vaccines, Attenuated