This other vaccine inoculates against pertussis. The vaccine for diphtheria—also a toxoid vaccine—is also often added to the tetanus/pertussis combo, making for the DPT vaccine. The tetanus ...

Vaccines mistakenly substituted for PPD include tetanus toxoid and diphtheria and tetanus toxoids. As of March 2004, 100 patients in 21 states had been identified as receiving a tetanus toxoid ...