From the Centers for Disease Control and Prevention. Outbreak of poliomyelitis--Angola, 1999.
D000810:Angola / Q000453:epidemiology; D002675:Child, Preschool; D004196:Disease Outbreaks; D006801:Humans; D007223:Infant; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage; D014611:Vaccination / Q000706:statistics & numerical data
D011055:Poliovirus Vaccine, Oral