title: Challenge for immunization programs: protect preschool, postschool generations.
authors.forename: C
authors.initials: C
authors.lastname: Marwick
mesh_terms: D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007114:Immunization; D007223:Infant; D012959:Socioeconomic Factors; D014481:United States