What is an example of a waterborne disease?

Cholera is an example of a waterborne disease because it is primarily transmitted through contaminated water sources. The bacterium Vibrio cholerae, which causes cholera, spreads when people consume water or food contaminated with fecal matter containing the bacteria. It can lead to severe dehydration and death if not treated promptly.

In contrast, the other options—diabetes, heart disease, and asthma—are non-communicable diseases that are not transmitted through water. Diabetes is a metabolic disorder, heart disease generally relates to cardiovascular health issues, and asthma is a respiratory condition often triggered by environmental factors rather than pathogens in water. Therefore, cholera stands out as the only disease in this context that specifically requires water contamination for transmission.