[Circulation of the wild polioviruses].
D002353:Carrier State; D006801:Humans; D007558:Italy; D011051:Poliomyelitis / Q000209:etiology / Q000276:immunology; D017955:Poliovirus / Q000302:isolation & purification*; D011055:Poliovirus Vaccine, Oral; D012722:Sewage; D014611:Vaccination
D011055:Poliovirus Vaccine, Oral; D012722:Sewage
Circolazione dei virus poliomielitici selvaggi.