#helminthiasis

Aliens: Parasites Inside Us

The term "parasite" describes creatures that feed on the life activity of another living being. Intracellular parasites (viruses) and protozoa as well as more complex life forms such as worms, fungi, and others can live inside the human body. The most common parasites that live in the human body are helminth worms: according to WHO statistics, about 4.5 billion people are infected with them.