Social & Preventive Medicine A full course of immunization against, Tetanus with 3 doses of Tetanus toxoid, confers immunity for how many years – A 5 B 10 C 15 D 20 💡 Explanation A full course of immunization against, Tetanus with 3 doses of Tetanus toxoid, confers immunity for how many years - ✓ Correct Answer: A. 5