What is a parasite?

A parasite is defined as an organism that requires a host to survive and reproduce. This relationship is characterized by the parasite deriving nutrients at the expense of the host, often leading to negative effects on the host's health. Parasites can include various organisms, such as protozoa, worms, and certain insects, all of which depend on another living organism to complete their life cycle.

Recognizing the nature of parasites is crucial in food safety, as they can be transmitted through contaminated food and water, posing risks for foodborne illnesses. Understanding this relationship highlights the importance of proper food handling and sanitation practices to eliminate potential hosts for these organisms.