Tetanus is non-communicable.

• A. Only in immunocompromised individuals
• B. Non-communicable
• C. Spread by aerosols
• D. Contagious via direct contact

Answer: (B)

Tetanus is non-communicable because it isn’t spread from one person to another. It results from a toxin produced by Clostridium tetani that enters the body through a wound contaminated with soil or other environmental spores. In the wound, especially under low-oxygen conditions, the bacteria produce toxin that affects nerves, causing muscle stiffness and spasms. This transmission requires a contaminated wound in a single person, not person-to-person spread, so there’s no contagious chain.

It isn’t spread by aerosols, and it isn’t contagious via direct contact with another person, because the disease isn’t transmitted through air or by touching an infected individual. Also, risk isn’t limited to immunocompromised individuals—any unvaccinated person with a contaminated wound can develop tetanus if exposed.