A world without polio. 'Future generations will know by history only...'.
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D006801:Humans; D011051:Poliomyelitis / Q000517:prevention & control*; D011054:Poliovirus Vaccine, Inactivated / Q000008:administration & dosage / Q000191:economics; D014481:United States
D011054:Poliovirus Vaccine, Inactivated