Final answer:
The TDaP vaccine works by providing protection against tetanus, diphtheria, and pertussis. It contains inactivated bacterial toxins that stimulate the immune system to produce antibodies and prevent the diseases caused by these toxins.
Step-by-step explanation:
Tetanus, Diphtheria, and Pertussis Vaccine (TDaP) works by providing protection against three different diseases: tetanus, diphtheria, and pertussis. The vaccine contains inactivated bacterial toxins, called toxoids, which activate the immune system to produce antibodies that neutralize the toxins.
This helps prevent the diseases caused by these toxins. For example, the diphtheria toxin inhibits protein synthesis in the host cell, ultimately killing the cell. The TDaP vaccine helps prevent this by stimulating the immune system to produce antibodies against the diphtheria toxin.