Question

Communicable vs. non-communicable diseases. Why are Legionella and tetanus infectious but non-communicable?

A) Legionella and tetanus are transmitted through contaminated food
B) Legionella and tetanus are caused by genetic mutations
C) Legionella and tetanus are transmitted through direct contact
D) Legionella and tetanus are caused by environmental exposure

Answer 1

Legionella and tetanus are non-communicable diseases although they are infectious. These diseases are caused by infection with specific bacteria and are transmitted through contact with contaminated water or a skin wound.

Step-by-step explanation:

Legionella and tetanus are classified as non-communicable diseases even though they are infectious. They are not transmitted from person to person like communicable diseases. Legionella is caused by the Legionella pneumophila bacterium and is transmitted through contact with contaminated water. Tetanus is caused by the Clostridium tetani bacterium and is transmitted through contact with a skin wound. While these diseases are caused by infectious agents, they do not spread from one person to another.