The vaccine that provides immunity to Haemophilus influenzae type b is referred to as:

The vaccine that provides immunity to Haemophilus influenzae type b is known as HIB. This vaccine is specifically designed to protect against infections caused by H. influenzae type b, which can lead to severe illnesses, particularly in young children. The HIB vaccine works by stimulating the immune system to recognize and fight the bacteria, thereby preventing diseases such as meningitis, pneumonia, and epiglottitis.

In contrast to the HIB vaccine, other options like BCG are aimed at preventing tuberculosis, while DTP is a combination vaccine that protects against diphtheria, tetanus, and pertussis. The pneumococcal vaccine targets infections caused by Streptococcus pneumoniae. Each of these vaccines serves a different purpose and targets different pathogens, making them distinct from the HIB vaccine that specifically addresses H. influenzae type b.