Oral poliovirus vaccination and breast feeding.
D001942:Breast Feeding; D002675:Child, Preschool; D004770:Enterovirus / Q000276:immunology; D005260:Female; D006801:Humans; D007223:Infant; D008895:Milk, Human / Q000276:immunology; D011051:Poliomyelitis / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral
D011055:Poliovirus Vaccine, Oral