title: The future of routine immunization in the developing world: challenges and opportunities.
authors.affiliation: United States Agency for International Development and United States Department of Health and Human Services, Washington, DC, USA ashen@usaid.gov.
authors.forename: Angela K
authors.initials: AK
authors.lastname: Shen
authors.affiliation: Maternal and Child Survival Program, Washington, DC, USA.
authors.forename: Rebecca
authors.initials: R
authors.lastname: Fields
authors.affiliation: Sabin Vaccine Institute, Washington, DC, USA.
authors.forename: Mike
authors.initials: M
authors.lastname: McQuestion
mesh_terms: D002662:Child Health Services / Q000639:trends; D002669:Child Welfare / Q000639:trends; D002675:Child, Preschool; D003140:Communicable Disease Control / Q000379:methods*; D003906:Developing Countries; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration / Q000639:trends*; D007223:Infant; D014944:World Health Organization