Letter: S.S.P.E. and Salk vaccine.
D000284:Administration, Oral; D002648:Child; D004196:Disease Outbreaks / Q000453:epidemiology; D006801:Humans; D007263:Infusions, Parenteral; D009520:New Zealand; D011054:Poliovirus Vaccine, Inactivated / Q000008:administration & dosage / Q000009:adverse effects*; D013019:South Africa; D013344:Subacute Sclerosing Panencephalitis / Q000453:epidemiology / Q000209:etiology*
D011054:Poliovirus Vaccine, Inactivated