What is the recommended vaccination schedule for HiB for a 2-month-old child?

The recommended vaccination schedule for Haemophilus influenzae type b (HiB) for a 2-month-old child includes doses at 2 months, 4 months, 6 months, and a booster dose at 12 to 15 months. This schedule effectively builds immunity over a targeted timeline, ensuring that the child is protected against HiB, which can cause serious infections.

The combination of doses at these intervals allows for the optimal development of the immune response. The initial doses at 2, 4, and 6 months help to prime the immune system and increase antibody levels, while the booster given between 12 to 15 months reinforces this immunity, thereby ensuring longer-lasting protection.

The other options do not align with the recommended timing for HiB vaccination. For instance, the options that propose doses at 6 weeks or 10 weeks deviate from the established guidelines. The timing and sequence of immunizations are critical for developing a robust and lasting immune response, making adherence to the correct schedule essential for effective vaccination.