DTPa (Diphtheria, Tetanus, Pertussis, and a-Pertussis vaccine)

DTPa is a combined vaccine that protects against four serious diseases: diphtheria, tetanus, pertussis (whooping cough), and acellular pertussis (a version of whooping cough). It works by teaching the immune system to recognize and fight these infections, reducing the risk of illness, complications, and transmission. Usually given in childhood as part of routine immunizations, DTPa is safe and effective, helping to prevent outbreaks and protect both individuals and the community by establishing immunity early in life.