title: WHO says polio free Europe is imminent.
mesh_terms: D005060:Europe / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011054:Poliovirus Vaccine, Inactivated / Q000008:administration & dosage*; D014944:World Health Organization
chemical_list: D011054:Poliovirus Vaccine, Inactivated