title: Diphtheria-tetanus-pertussis vaccine shortage--United States.
mesh_terms: D002648:Child; D002675:Child, Preschool; D004168:Diphtheria Toxoid / Q000008:administration & dosage / Q000600:supply & distribution*; D006801:Humans; D007115:Immunization Schedule; D007223:Infant; D010567:Pertussis Vaccine / Q000008:administration & dosage / Q000600:supply & distribution*; D013745:Tetanus Toxoid / Q000008:administration & dosage / Q000600:supply & distribution*; D014481:United States
chemical_list: D004168:Diphtheria Toxoid; D010567:Pertussis Vaccine; D013745:Tetanus Toxoid