A better system for polio vaccination in developing countries?
D000914:Antibodies, Viral / Q000096:biosynthesis; D002675:Child, Preschool; D003906:Developing Countries; D004334:Drug Administration Schedule; D006801:Humans; D007194:India; D007223:Infant; D011051:Poliomyelitis / Q000517:prevention & control*; D017955:Poliovirus / Q000276:immunology; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage*
D000914:Antibodies, Viral; D011055:Poliovirus Vaccine, Oral