DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough) and tetanus caused by bacteria. Which of the following is/are correctly matched with their causative pathogens?

1. Diphtheria - Corynebacterium
2. Pertussis - Bordetella
3. Tenanus - Clostridium

Explanation

• Diphtheria is an upper respiratory tract illness caused by the bacterium 'Corynebacterium diphtheriae'. Because of widespread and routine childhood DPT immunizations, diphtheria is now rare in many parts of the world.
• Pertussis, also known as whooping cough, is a highly contagious bacterial disease caused by the bacterium 'Bordetella pertussis'. In some countries, this disease is called the 100 days' cough.
• Tetanus is a condition characterized by a prolonged contraction of skeletal muscle fibers caused by the bacterium 'Clostridium tetani'.