What is a primary way humans can contract waterborne parasites?

The primary way humans can contract waterborne parasites is by ingesting aquatic species that have been infected with these parasites. Many waterborne parasites, such as certain types of protozoa and helminths, thrive in freshwater or marine environments and can inhabit aquatic organisms, including fish and shellfish. When humans consume these contaminated aquatic species, they can introduce the parasites into their bodies, leading to infection.

While ingesting contaminated food and direct contact with infected soil are potential pathways for other types of infections, they are not categorized specifically as waterborne transmission methods. Similarly, exposure to contaminated air is not a recognized mode of transmission for waterborne parasites, as these organisms primarily spread through water sources and the consumption of aquatic life rather than through airborne particles. Thus, the correct emphasis on consuming infected aquatic species accurately highlights a key method of transmission for these types of parasites.