Poliomyelitis antibody levels of young children in Houston, 1961-62. Existence of susceptible pockets in an area using Salk vaccine of high effectiveness.
D006801:Humans; D011051:Poliomyelitis; D011054:Poliovirus Vaccine, Inactivated; D023321:Poliovirus Vaccines
D011054:Poliovirus Vaccine, Inactivated; D023321:Poliovirus Vaccines
POLIOVIRUS VACCINE