title: Polio surveillance: tracking progress towards eradication, worldwide, 2014–2015.
mesh_terms: D000293:Adolescent; D000346:Afghanistan / Q000453:epidemiology; D000349:Africa / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D060740:Disease Eradication / Q000639:trends*; D014943:Global Health; D006801:Humans; D007223:Infant; D007493:Iraq / Q000453:epidemiology; D007753:Laboratories / Q000592:standards; D009123:Muscle Hypotonia / Q000453:epidemiology; D010154:Pakistan / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011159:Population Surveillance; D013593:Syria / Q000453:epidemiology; D015006:Yemen / Q000453:epidemiology