A review of experience with an avirulent strain of R. prowazeki (strain E) as a living agent for immunizing man against epidemic typhus.
D006801:Humans; D007114:Immunization; D019369:Life; D012283:Rickettsia prowazekii; D014438:Typhus, Epidemic Louse-Borne / Q000276:immunology*; D014611:Vaccination
RICKETTSIA PROWAZEKII; TYPHUS/immunology