As sourced by the CDC: Tetanus, diphtheria and pertussis can be very serious diseases, even for adolescents and adults. Tdap vaccine can protect us from these diseases.
TETANUS (Lockjaw) causes painful muscle tightening and stiffness, usually all over the body.
DIPHTHERIA can cause a thick coating to form in the back of the throat.
PERTUSSIS (Whooping Cough) causes severe coughing spells, which can cause difficulty breathing, vomiting and disturbed sleep.
These diseases are caused by bacteria. Diphtheria and pertussis are spread from person to person through coughing or sneezing. Tetanus enters the body through cuts, scratches, or wounds.