<prompt> Booster dose of Tetanus toxoid should be given every?1 year5 years10 year15 year  <response>: Firs t booster dose should be given a year after initial 2 doses. No more than 1 additional booster dose given 5 years after 3rd dose is required in adults Reference; Park;s Textbook of preventive and social medicine, 24th edition.Pg no. 330 