Polio vaccination in developing countries.
D001942:Breast Feeding; D003906:Developing Countries; D005260:Female; D006801:Humans; D007223:Infant; D008895:Milk, Human / Q000276:immunology; D011051:Poliomyelitis / Q000276:immunology; D011055:Poliovirus Vaccine, Oral; D014454:Uganda; D014611:Vaccination
D011055:Poliovirus Vaccine, Oral