[Epidemiological studies on the significance of sewage in the spread of poliomyelitis].
D016021:Epidemiologic Studies; D006801:Humans; D011051:Poliomyelitis / Q000635:transmission*; D012722:Sewage / Q000382:microbiology*
D012722:Sewage
POLIOMYELITIS/transmission; SEWAGE/microbiology