Which of the following diseases is not communicable?

• A. Measles
• B. Pneumonia
• C. Tetanus
• D. Hepatitis

Answer: (C)

Communicability means a disease can be passed from one person to another. Tetanus is not spread between people. It happens when Clostridium tetani bacteria in soil enter a wound, producing toxin in the body; you don’t catch tetanus from someone else, and vaccination protects against it.

Measles passes easily from person to person through respiratory droplets, so it’s highly contagious. Pneumonia can be caused by pathogens that disperse and infect others, making it communicable in many cases. Hepatitis, depending on the type, is transmitted through contaminated food or water or through contact with infected blood or bodily fluids, so it’s also communicable.

So, the disease that is not communicable is tetanus.