[On the isolation of wild poliovirus in extensively vaccinated populations].
D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007558:Italy; D011051:Poliomyelitis / Q000453:epidemiology* / Q000276:immunology*
Sull'isolamento di poliovirus selvaggi in popolazioni estesamente vaccinate.