Which diseases are protected against by the DTaP vaccine?

The DTaP vaccine is specifically designed to protect against three serious bacterial diseases: diphtheria, tetanus, and pertussis.

Diphtheria is an infection caused by the Corynebacterium diphtheriae bacterium, which can lead to severe respiratory complications and other systemic effects. Tetanus, caused by Clostridium tetani, affects the nervous system and results in muscle stiffness and spasms. Pertussis, commonly known as whooping cough, is caused by Bordetella pertussis and is characterized by severe coughing spells that can be dangerous, particularly in infants and young children.

This vaccine is a critical part of the routine immunization schedule for children, as it provides essential protection against these diseases, which can lead to significant morbidity and mortality if contracted. The inclusion of typhoid fever or polio in other options is incorrect since these diseases are not covered by the DTaP vaccine. Instead, they are prevented through other vaccines, such as the typhoid vaccine and the polio vaccine.