The following are examples of air borne diseases, except

Step 1: Analyze the question You are asked to find the disease that is NOT airborne. Airborne diseases spread through droplets or particles in the air, released when an infected person coughs, sneezes, or talks.

Step 2: Explain the concept Diseases are grouped by how they spread:

• Airborne/droplet: the pathogen travels through the air and is breathed in.
• Water/food-borne: the pathogen is swallowed in contaminated water or food.
• Vector-borne: an insect or animal carries the pathogen.
• Contact: the pathogen passes through touch or body fluids.

Step 3: Check each option

• A. Chicken pox: caused by the varicella-zoster virus and spread through the air by droplets. Airborne.
• B. Cholera: caused by the bacterium Vibrio cholerae and spread through contaminated water and food. It affects the intestines, causing severe diarrhoea and vomiting. Not airborne.
• C. Common cold: caused by rhinoviruses and spread by sneeze and cough droplets. Airborne.
• D. Whooping cough (pertussis): caused by the bacterium Bordetella pertussis and spread by droplets. Airborne.

Step 4: Answer Cholera is the only disease that is not airborne, so the answer is B.

Tip: Link the disease to the body system it attacks. Respiratory diseases (cold, whooping cough, tuberculosis, chicken pox, measles) are airborne. Intestinal diseases (cholera, typhoid, dysentery) are water or food-borne. Remember: "Cholera = Contaminated water."