Difficulties in polio eradication.
Arya
S C
SC
D005618:Fresh Water / Q000821:virology*; D006801:Humans; D007564:Japan; D011051:Poliomyelitis / Q000517:prevention & control* / Q000635:transmission; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage / Q000009:adverse effects*; D012008:Recurrence; D012307:Risk Factors; D012722:Sewage / Q000821:virology*
D011055:Poliovirus Vaccine, Oral; D012722:Sewage