title: [In 1974 the question we asked in 1950 is still discussed: do wild or domestic animals demonstrate a particular cycle of R. prowazeki conservation or an antigenic transformation of rickettsia].
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000032:analysis; D000942:Antigens, Bacterial; D001907:Boutonneuse Fever / Q000453:epidemiology; D002417:Cattle; D003937:Diagnosis, Differential; D004197:Disease Reservoirs; D004285:Dogs; D011817:Rabbits; D012282:Rickettsia Infections / Q000453:epidemiology* / Q000276:immunology / Q000635:transmission; D012283:Rickettsia prowazekii / Q000302:isolation & purification* / Q000472:pathogenicity; D012698:Serologic Tests; D013984:Tick Infestations / Q000453:epidemiology; D014170:Transformation, Genetic; D014437:Typhus, Endemic Flea-Borne / Q000453:epidemiology; D014438:Typhus, Epidemic Louse-Borne / Q000175:diagnosis / Q000453:epidemiology / Q000276:immunology
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial
vernacular_title: En 1974 la question qu nous avions posée en 1950 est toujours discutée: les animaux domestiques ou sauvages démontrent-ils un cycle particulier de conservation de R. prowazeki ou une transformation antigénique d'une rickettsie