title: Acellular pertussis vaccines: the next step.
authors.affiliation: Department of Pediatrics, Dalhousie University, Halifax, Canada.
authors.forename: S A
authors.initials: SA
authors.lastname: Halperin
mesh_terms: D002675:Child, Preschool; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D022681:Diphtheria-Tetanus-acellular Pertussis Vaccines; D006284:Health Plan Implementation; D006801:Humans; D017589:Immunization Programs; D007115:Immunization Schedule; D007223:Infant; D007391:International Cooperation; D014612:Vaccines / Q000191:economics; D014917:Whooping Cough / Q000517:prevention & control*
chemical_list: D015721:Diphtheria-Tetanus-Pertussis Vaccine; D022681:Diphtheria-Tetanus-acellular Pertussis Vaccines; D014612:Vaccines