Dr. Marney Gundlach Dr. Gundlach. 1  Children : Children typically receive their first tetanus shot at 2 months, the second at 4 months, and the third at 6 months, the fourth between 15 and 18 months, and the fifth between 4 and 6 years of age. Then, the next dose is between ages 11 and 12 years old, and then up to every 10 years afterwards.