Booster dose of Tetanus toxoid should be given every?
**Core Concept**
Tetanus toxoid booster doses are essential for maintaining immunity against tetanus, a bacterial infection caused by Clostridium tetani. The booster schedule is critical to prevent tetanus in individuals who have previously received tetanus toxoid vaccinations.
**Why the Correct Answer is Right**
The World Health Organization recommends a booster dose of tetanus toxoid every 10 years for individuals who have completed the primary vaccination series. This booster dose stimulates the production of tetanus-specific antibodies, which provide protection against tetanus. The booster schedule is crucial to maintain adequate antibody levels, as tetanus immunity wanes over time.
**Why Each Wrong Option is Incorrect**
**Option A:** 5 years. This is too frequent, as the primary vaccination series provides long-term protection against tetanus. Booster doses are not typically given every 5 years.
**Option B:** 20 years. This is too infrequent, as immunity against tetanus can wane significantly over 20 years, leaving individuals vulnerable to infection.
**Option C:** 30 years. Similar to option B, this is too infrequent and can lead to inadequate protection against tetanus.
**Clinical Pearl / High-Yield Fact**
The tetanus booster schedule is not dependent on the type of vaccine used (e.g., DTaP or Td). Regardless of the vaccine type, a booster dose is recommended every 10 years to maintain immunity against tetanus.
**Correct Answer:** C. 10 years.