title: [Vaccination programs: what and why should be monitoring].
authors.affiliation: Narodowy Instytut Zdrowia Publicznego w Warszawie.
authors.forename: Waleria
authors.initials: W
authors.lastname: Hryniewicz
mesh_terms: D005062:European Union; D006801:Humans; D017589:Immunization Programs / Q000592:standards*; D007115:Immunization Schedule; D011044:Poland; D011159:Population Surveillance; D018570:Risk Assessment; D012449:Safety; D014612:Vaccines / Q000009:adverse effects*
chemical_list: D014612:Vaccines