DPT stands for which vaccine combination?

• A. Dengue, Polio, Typhoid
• B. Diphtheria, Pertussis, Tetanus
• C. Diphtheria, Pneumococcal, Tetanus
• D. Diphtheria, Pertussis, Tuberculosis

Answer: (B)

Understanding vaccine acronyms helps you know exactly which diseases a combination shot protects against. DPT stands for a vaccine that targets three diseases: diphtheria, pertussis (whooping cough), and tetanus. Diphtheria and tetanus are addressed with toxoid components, meaning inactivated toxins from the bacteria stimulate immunity. Pertussis protection comes from an inactivated portion of the bacteria, chosen to balance strong protection with fewer side effects. The other diseases listed in the incorrect options—dengue, polio, typhoid, pneumococcal disease, and tuberculosis—are not covered by this combination and are prevented by different vaccines. In modern schedules, this same idea is reflected as DTaP, using an acellular pertussis component, but the three diseases included remain diphtheria, pertussis, and tetanus.