What is the most important information I should know about diphtheria and tetanus vaccines?
The tetanus and diphtheria toxoids vaccine is given in a series of shots. The first shot is usually given to a person who is at least 7 years old. The booster shots are then given 4 to 8 weeks after the first shot, and 6 to 12 months after the second shot. After the initial series, a booster dose is given every 10 years.