Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
The DPT vaccine is a combination vaccine that protects against diphtheria, pertussis (whooping cough), and tetanus. It is crucial in preventing these serious bacterial infections, particularly in children.
5 Must Know Facts For Your Next Test
Diphtheria is caused by Corynebacterium diphtheriae, which produces a toxin affecting the respiratory system.
Pertussis, caused by Bordetella pertussis, leads to severe coughing fits and is highly contagious.
Tetanus, caused by Clostridium tetani, affects the nervous system but can enter the body through respiratory tract injuries.
The DPT vaccine significantly reduced the incidence of these diseases since its introduction.
Booster shots for the DPT vaccine are necessary to maintain immunity throughout life.
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Related terms
Diphtheria: A bacterial infection of the respiratory system caused by Corynebacterium diphtheriae.
Pertussis: Also known as whooping cough, it is a highly contagious respiratory disease caused by Bordetella pertussis.
Tetanus: A serious bacterial infection causing muscle stiffness and spasms, often entering through wounds.