From the Centers for Disease Control and Prevention. Mass vaccination with oral poliovirus vaccine--Asia and Europe, 1995.
D001208:Asia; D005060:Europe; D006801:Humans; D017589:Immunization Programs; D011051:Poliomyelitis / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral
D011055:Poliovirus Vaccine, Oral