What is the duration of immunity provided by the Td booster vaccine?

The Td (tetanus-diphtheria) vaccine booster is recommended every 10 years for individuals to maintain immunity against tetanus and diphtheria. This schedule follows guidelines from health authorities, which suggest that after the initial vaccination series, a Td booster is needed to ensure continued protection from these diseases. One primary reason for the 10-year recommendation is that immunity to tetanus can diminish over time, making it crucial to receive updates regularly to remain protected.

While some vaccines provide longer duration immunity or may not require boosters at all, the Td vaccine is particularly structured around the 10-year intervals to optimize protection. The other durations mentioned, such as 5 years, 15 years, or lifetime, do not align with established vaccination guidelines for Td boosters. Regular updates every decade remain essential for sustaining immunity effectively.