title: Challenges in global immunization and the Global Immunization Vision and Strategy 2006-2015.
mesh_terms: D002648:Child; D002675:Child, Preschool; D014943:Global Health; D006801:Humans; D007223:Infant; D032541:Mass Vaccination / Q000458:organization & administration* / Q000706:statistics & numerical data / Q000639:trends; D014480:United Nations / Q000458:organization & administration; D014944:World Health Organization / Q000458:organization & administration