title: In 1994 triple antigen vaccine (DTP) was introduced into the vaccination schedule for children age 4-5 years.
authors.forename: A M
authors.initials: AM
authors.lastname: Fasher
authors.forename: N
authors.initials: N
authors.lastname: Dunbar
authors.forename: S
authors.initials: S
authors.lastname: Young
mesh_terms: D000367:Age Factors; D002675:Child, Preschool; D015721:Diphtheria-Tetanus-Pertussis Vaccine / Q000008:administration & dosage / Q000009:adverse effects*; D006801:Humans; D007115:Immunization Schedule; D015994:Incidence; D007223:Infant; D017060:Patient Satisfaction; D015397:Program Evaluation; D011446:Prospective Studies
chemical_list: D015721:Diphtheria-Tetanus-Pertussis Vaccine