title: Progress towards eradicating poliomyelitis in Nigeria, January 2009- June 2010.
mesh_terms: D002675:Child, Preschool; D006801:Humans; D015994:Incidence; D007223:Infant; D032541:Mass Vaccination; D009549:Nigeria / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control* / Q000821:virology; D017955:Poliovirus; D011055:Poliovirus Vaccine, Oral; D011159:Population Surveillance
chemical_list: D011055:Poliovirus Vaccine, Oral