title: Progress towards eradicating poliomyelitis – Nigeria, January 2010–June 2011.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007115:Immunization Schedule; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D032541:Mass Vaccination; D009549:Nigeria / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control* / Q000821:virology; D017955:Poliovirus / Q000235:genetics; D011159:Population Surveillance; D017422:Sequence Analysis, DNA