Tetanus is completely preventable by active tetanus immunization.Immunization is considered to provide protection for 10 years. Studies in the army suggest that good protection persists up to 12 years after the last immunization.

In the U.S., immunizations are begun in infancy with the DTaP series of shots. The DTaP vaccine is a "3-in-1" vaccine that protects against diphtheria, pertussis, and tetanus. It is a safer version of an older vaccine known as DTP, which is no longer used in the U.S.

Td vaccine is used as a booster to maintain immunization in teenagers and adults.

Older teenagers and adults who have sustained injuries, especially puncture-type wounds, should receive booster immunization for tetanus if more than 10 years have passed since the last booster.

Thorough cleaning of all injuries and wounds and the removal of dead or severely injured tissue (debridement), when appropriate, may reduce the risk of developing tetanus. If you have been injured outside or in any way that makes contact with soil likely, contact your health provider regarding the possible risk for tetanus.

Many people believe injuries caused by rusty nails are the most dangerous. This is true only if the nail is dirty as well as rusty, as is usually the case. It is the dirt, not the rust, that carries the risk for tetanus.