Progress towards poliomyelitis eradication in Nigeria, January 2004-July 2005.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D017589:Immunization Programs; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D009549:Nigeria / Q000453:epidemiology; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011159:Population Surveillance; D014611:Vaccination / Q000706:statistics & numerical data