When is TT2 administered and what is its period of protection?

The correct administration period and duration of protection for TT2, or Tetanus Toxoid dose 2, is essential for understanding tetanus immunization schedules. TT2 is typically given at least 4 weeks after the first dose (TT1) to effectively boost immunity, as the immune response takes time to develop. The duration of protection following TT2 is generally around 10 years, which means individuals will have robust immunity against tetanus for a significant period after receiving this second dose.

By understanding the timing and duration of vaccine protection, it becomes clear that the schedule should reflect both immediate and long-term efficacy against the disease. In the context of general immunization guidelines, the answer that aligns best with this understanding indicates the correct time frame and the longevity of protection after vaccination.