[Observations on immune persistence after vaccination with attenuated polio vaccine (author's transl)].
D000914:Antibodies, Viral / Q000032:analysis*; D006801:Humans; D007223:Infant; D011054:Poliovirus Vaccine, Inactivated / Q000276:immunology*; D013997:Time Factors; D014611:Vaccination; D014613:Vaccines, Attenuated / Q000276:immunology
D000914:Antibodies, Viral; D011054:Poliovirus Vaccine, Inactivated; D014613:Vaccines, Attenuated