Poliomyelitis: concerns for polio-free countries.
Arya
Subhash C
SC
Agarwal
Nirmala
N
D006801:Humans; D011051:Poliomyelitis / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral / Q000276:immunology; D012722:Sewage / Q000821:virology
D011055:Poliovirus Vaccine, Oral; D012722:Sewage