A tetanus shot series is given at 2, 4 and 6 months of age, notes the Centers for Disease Control and Prevention. Boosters are given at 15 to 18 months old, 4 to 6 years old and 11 to 18 years old. A booster every 10 years thereafter is recommended.
Tetanus shots are sometimes given in combination vaccinations, such as the DTaP vaccine that protects against diphtheria, tetanus and pertussis. Tetanus, which is also called lock jaw, is a condition that can lead to death in 10 to 20 percent of affected patients, notes WebMD. Symptoms, including a stiff jaw, often appear a week after the patient is infected. Other symptoms include muscle spasms of the face, heart palpitations, high blood pressure, fever, trouble swallowing, muscle stiffness, irritability and sweating.