infections
Diphtheria Tetanus Pertussis Vaccine
Side Effects of Diphtheria Tetanus Pertussis Vaccine
The injection site may become sore, swollen, and red. Serious side effects are rare. They include high fever, inconsolable crying, brain problems, seizures, shock, and a severe allergic reaction. Serious side effects usually result from the pertussis part of the vaccine. If they occur, the vaccine that contains pertussis is not used again. Instead, the tetanus-diphtheria vaccine (which does not contain the pertussis component) is used to complete the vaccination series. The DTaP or Tdap vaccine is not repeated if seizures occur within 3 days after the vaccine is given or other signs of brain malfunction occur within 7 days after the vaccine is given. 