New developments with pertussis vaccines.
D002986:Clinical Trials as Topic; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D017277:Drug Approval; D006801:Humans; D007223:Infant; D010567:Pertussis Vaccine / Q000276:immunology / Q000627:therapeutic use*
D015721:Diphtheria-Tetanus-Pertussis Vaccine; D010567:Pertussis Vaccine