What should polio immunization policy be? Public Health Service expects advice soon.
Marwick
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D006291:Health Policy; D006801:Humans; D011051:Poliomyelitis / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral / Q000009:adverse effects*; D014481:United States; D014492:United States Public Health Service; D014613:Vaccines, Attenuated
D011055:Poliovirus Vaccine, Oral; D014613:Vaccines, Attenuated