title: Polio risks.
mesh_terms: D006801:Humans; D007114:Immunization; D011051:Poliomyelitis / Q000209:etiology / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral / Q000009:adverse effects; D006113:United Kingdom
chemical_list: D011055:Poliovirus Vaccine, Oral