ソフィア・スタイン
A parasite is a daily routine structure that experiences on or inside a host life form and gets its food from the cost of its host. There are three rule classes of parasites that can cause infections in people: Protozoa, Helminths, and Ectoparasites. Protozoa are minuscule, single-celled living beings that can be free-living or parasitic in nature. They can duplicate in people, which adds to their endurance and moreover allows genuine illnesses to create from a solitary life form. Transmission of protozoa that live in a human's stomach related framework to another human that normally happens through a fecal-oral course (for instance, tainted food or water or individual to-singular contact). Protozoa that live in the blood or tissue of people are communicated to different people by an arthropod vector (for instance, through the nibble of a mosquito or sand fly).