title: Why quantity of diphtheria and pertussis vaccines is reduced for children 7 years onwards?
authors.forename: Yash
authors.initials: Y
authors.lastname: Paul
mesh_terms: D000367:Age Factors; D002648:Child; D004165:Diphtheria / Q000276:immunology* / Q000517:prevention & control; D004168:Diphtheria Toxoid / Q000008:administration & dosage* / Q000276:immunology; D006801:Humans; D010567:Pertussis Vaccine / Q000008:administration & dosage* / Q000276:immunology; D014917:Whooping Cough / Q000276:immunology* / Q000517:prevention & control
chemical_list: D004168:Diphtheria Toxoid; D010567:Pertussis Vaccine