Bett Vaccine (Each 0.5ml) is used as a vaccination to prevent tetanus (also known as lockjaw). During childhood, five doses are recommended, with a sixth given during adolescence. Additional doses every 10 years are recommended. Bett Vaccine (Each 0.5ml) is administered by a healthcare professional and should not be self-administered. It is important that the child receives all the vaccination doses. For the vaccine to be most effective, it is important to get the vaccination booster injection every 10 years.