Poliomyelitis vaccines.
D005069:Evaluation Studies as Topic; D006801:Humans; D011051:Poliomyelitis / Q000517:prevention & control*; D011054:Poliovirus Vaccine, Inactivated; D011055:Poliovirus Vaccine, Oral; D006113:United Kingdom; D014481:United States
D011054:Poliovirus Vaccine, Inactivated; D011055:Poliovirus Vaccine, Oral