title: Monitoring progress towards global polio eradication: poliovirus surveillance, 2009–2010.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D014943:Global Health; D006801:Humans; D007753:Laboratories / Q000592:standards; D032541:Mass Vaccination; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011159:Population Surveillance