title: Have polio-free countries lost sight of need to keep vaccination rates high?
authors.forename: Rebecca
authors.initials: R
authors.lastname: Voelker
mesh_terms: D002170:Canada; D002648:Child; D003906:Developing Countries; D004196:Disease Outbreaks; D014943:Global Health; D006801:Humans; D017589:Immunization Programs; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control*; D023321:Poliovirus Vaccines / Q000008:administration & dosage*; D014481:United States; D014611:Vaccination / Q000706:statistics & numerical data
chemical_list: D023321:Poliovirus Vaccines