Poliovirus spreads beyond Nigeria after vaccine uptake drops.
Pincock
Stephen
S
D000349:Africa / Q000453:epidemiology; D004196:Disease Outbreaks; D006801:Humans; D009549:Nigeria / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control; D023321:Poliovirus Vaccines / Q000008:administration & dosage*; D014611:Vaccination / Q000706:statistics & numerical data
D023321:Poliovirus Vaccines