The response of premature infants to infection with attenuated poliovirus.
D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature / Q000276:immunology*; D011051:Poliomyelitis / Q000276:immunology*; D017955:Poliovirus
INFANT, PREMATURE/immunology; POLIOMYELITIS/immunology