How often should adults receive a tetanus booster?

The recommended schedule for tetanus boosters is every 10 years for adults. However, if an individual sustains a dirty or contaminated wound, it is recommended that the booster be given every 5 years to enhance protection. This approach helps ensure that immunity to tetanus is maintained, particularly in situations where the risk of infection is increased due to the nature of the wound. The schedule aims to balance adequate immunity while preventing unnecessary vaccinations. Thus, the correct answer reflects both regular immunization intervals and adjustments based on injury type, ensuring optimal protection against tetanus for adults.