title: Progress towards poliomyelitis eradication in Chad, January 2011– August 2012.
mesh_terms: D000293:Adolescent; D002596:Chad / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D060740:Disease Eradication; D006801:Humans; D015994:Incidence; D007223:Infant; D032541:Mass Vaccination; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control* / Q000821:virology; D011055:Poliovirus Vaccine, Oral / Q000627:therapeutic use; D011159:Population Surveillance
chemical_list: D011055:Poliovirus Vaccine, Oral