title: Expanded programme on immunization.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D004165:Diphtheria / Q000453:epidemiology / Q000276:immunology / Q000517:prevention & control*; D015721:Diphtheria-Tetanus-Pertussis Vaccine / Q000008:administration & dosage* / Q000276:immunology; D004196:Disease Outbreaks / Q000517:prevention & control*; D006801:Humans; D017589:Immunization Programs / Q000639:trends*; D015994:Incidence; D007223:Infant; D011044:Poland / Q000453:epidemiology
chemical_list: D015721:Diphtheria-Tetanus-Pertussis Vaccine