[Investigation of natural infective foci of leptospirosis (author's transl)].
D000818:Animals; D002681:China; D004197:Disease Reservoirs; D006801:Humans; D007919:Leptospira / Q000302:isolation & purification*; D007922:Leptospirosis / Q000453:epidemiology / Q000635:transmission*; D051381:Rats / Q000382:microbiology; D013552:Swine / Q000382:microbiology