An<unk>  is a condition in which a parasite infects the gastro-intestinal tract of humans and other animals. Such parasites can live anywhere in the body, but most prefer the<unk>  wall. Routes of exposure and infection include ingestion of undercooked meat, drinking infected water, fecal-oral transmission and skin absorption. Some types of helminths and protozoa are classified as<unk>  parasites that cause infection—those that reside in the intestines. These infections can damage or sicken the host (humans or other animals). If the<unk>  is caused by helminths, the infection is called helminthiasis.
Intestinal parasite infection
Soil-transmitted helminthiasis
Pinworm infection
Hookworm infection
Intestinal infectious diseases
Behavior-altering parasite
Protozoan infection
Foreign body in alimentary tract