Which interval is correct for routine tetanus vaccination in adults with uncertain status?

Which interval is correct for routine tetanus vaccination in adults with uncertain status?

• A. Every 5 years
• B. Every 7 years
• C. Every 8 years
• D. Every 10 years

Answer: (D)

Immunity from tetanus boosters wanes over time, so adults need periodic revaccination to keep protection above a safe level. When a person’s vaccination history is uncertain, the standard approach is a routine booster every 10 years to maintain adequate protection. Shorter intervals like every 5, 7, or 8 years aren’t routinely recommended for ongoing protection because they don’t provide a proven advantage and would mean more doses than necessary. The 10-year interval is the guideline-supported balance between sustained immunity and practicality. In wounds with uncertain status, clinicians may adjust the plan by giving a tetanus-containing vaccine dose and, if indicated, tetanus immunoglobulin, but the routine booster interval remains 10 years.

Immunity from tetanus boosters wanes over time, so adults need periodic revaccination to keep protection above a safe level. When a person’s vaccination history is uncertain, the standard approach is a routine booster every 10 years to maintain adequate protection. Shorter intervals like every 5, 7, or 8 years aren’t routinely recommended for ongoing protection because they don’t provide a proven advantage and would mean more doses than necessary. The 10-year interval is the guideline-supported balance between sustained immunity and practicality. In wounds with uncertain status, clinicians may adjust the plan by giving a tetanus-containing vaccine dose and, if indicated, tetanus immunoglobulin, but the routine booster interval remains 10 years.