INFLUENCE OF PRE-EXISTING IMMUNITY UPON EFFECT OF SABIN VACCINE.
D000937:Antigen-Antibody Reactions; D006801:Humans; D007109:Immunity; D007223:Infant; D011055:Poliovirus Vaccine, Oral; D023321:Poliovirus Vaccines; D012106:Research
D011055:Poliovirus Vaccine, Oral; D023321:Poliovirus Vaccines
ANTIGEN-ANTIBODY REACTIONS; EXPERIMENTAL LAB STUDY; IMMUNITY; INFANT; POLIOVIRUS VACCINE, ORAL