How often should the DPT-Hep B-Hib combination vaccine be given?

The DPT-Hep B-Hib combination vaccine is typically administered during the early months of an infant's life, specifically at 6 weeks, 10 weeks, and 14 weeks. This schedule is designed to provide timely protection against these serious diseases—diphtheria, pertussis, tetanus (DPT), hepatitis B (Hep B), and Haemophilus influenzae type b (Hib).

Administering the vaccine at these intervals allows for the optimal development of immunity as the infant’s immune system is developing and is able to respond to the combined vaccination effectively.

The other options focus on ages outside this initial vaccination timeframe. Immunizations such as those given at 12 months, 18 months, or 2 years typically relate to other vaccinations or booster shots but are not the recommended timing for the combined DPT-Hep B-Hib vaccination.