Infection and immunization of laboratory animals with Rickettsia prowazekii of reduced pathogenicity, strain E.
D000818:Animals; D000830:Animals, Laboratory; D007114:Immunization; D012281:Rickettsia; D012283:Rickettsia prowazekii; D013180:Sprains and Strains; D014611:Vaccination; D014774:Virulence
RICKETTSIA/prowazekii, experiment