The Td booster dose is administered every how many years throughout a lifetime?

The Td booster dose is administered every how many years throughout a lifetime?

• A. Every 5 years
• B. Every 10 years throughout a lifetime
• C. Only at birth
• D. Every 15 years

Answer: (B)

Protection against tetanus and diphtheria is maintained with periodic boosters, and the standard lifelong schedule is a tetanus-diphtheria booster every 10 years. After completing the childhood vaccination series, adults receive a Td booster about every decade to keep antibody levels high enough to prevent disease, since immunity wanes over time. The option stating a 10-year interval aligns with this guideline, while shorter (every 5 years) or longer (every 15 years) intervals don’t match the established schedule. A booster only at birth would not sustain protection through adulthood, and in real-world practice some wound situations may prompt an earlier booster, but the routine lifelong interval remains every 10 years.

Protection against tetanus and diphtheria is maintained with periodic boosters, and the standard lifelong schedule is a tetanus-diphtheria booster every 10 years. After completing the childhood vaccination series, adults receive a Td booster about every decade to keep antibody levels high enough to prevent disease, since immunity wanes over time. The option stating a 10-year interval aligns with this guideline, while shorter (every 5 years) or longer (every 15 years) intervals don’t match the established schedule. A booster only at birth would not sustain protection through adulthood, and in real-world practice some wound situations may prompt an earlier booster, but the routine lifelong interval remains every 10 years.