title: Need for improved vaccine safety surveillance.
authors.forename: H
authors.initials: H
authors.lastname: Takahashi
mesh_terms: D016907:Adverse Drug Reaction Reporting Systems; D006801:Humans; D007114:Immunization; D010243:Paralysis / Q000209:etiology; D011055:Poliovirus Vaccine, Oral / Q000009:adverse effects*
chemical_list: D011055:Poliovirus Vaccine, Oral