Three waterborne diseases are ____

• A. Tuberculosis, strep throat, scarlet fever
• B. Malaria, dengue and zika
• C. Measles, mumps, rubella
• D. Typhoid fever, dysentery and cholera

Answer: (D)

Waterborne diseases spread when people drink or come into contact with water contaminated by fecal matter. Typhoid fever, caused by Salmonella typhi, is a classic example of fecal-oral transmission via contaminated drinking water or food. Cholera, caused by Vibrio cholerae, spreads through untreated or inadequately treated water and leads to rapid, severe diarrhea. Dysentery, often due to Shigella or Entamoeba histolytica, is also commonly transmitted through contaminated water and poor sanitation. Together, these illustrate the waterborne, fecal-oral transmission route.

The other options involve illnesses spread mainly by respiratory droplets or insect vectors, not through water, which is why they don’t fit as waterborne diseases.