Disease eradication. Two steps forward, one step back in polio fight.
Roberts
Leslie
L
D000349:Africa / Q000453:epidemiology; D001211:Asia, Western / Q000453:epidemiology; D002648:Child; D004196:Disease Outbreaks / Q000517:prevention & control*; D006801:Humans; D017589:Immunization Programs; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission; D023321:Poliovirus Vaccines; D014480:United Nations; D014611:Vaccination; D014944:World Health Organization
D023321:Poliovirus Vaccines