title: Progress towards interruption of wild poliovirus transmission worldwide, 2009.
mesh_terms: D000293:Adolescent; D000346:Afghanistan / Q000453:epidemiology; D002648:Child; D006801:Humans; D017589:Immunization Programs; D015994:Incidence; D007194:India / Q000453:epidemiology; D009549:Nigeria / Q000453:epidemiology; D010154:Pakistan / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission; D011055:Poliovirus Vaccine, Oral / Q000627:therapeutic use; D011159:Population Surveillance
chemical_list: D011055:Poliovirus Vaccine, Oral