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An intestinal parasite infection 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 intestinal wall.
Many of the worms referred to as helminths are intestinal parasites. An infection by a helminth is known as helminthiasis, helminth infection, or intestinal worm infection. There is a naming convention which applies to all helminths: the ending "-asis" (or in veterinary science: "-osis") is added at the end of the name of the worm to denote the ...
intestinal direct microscopy of stool (PCR, antibody) • worldwide: one of the most common human parasites [1] [2] • Developing regions: infects 40–100% of the total populations [1] [2] [3] eating food contaminated with feces from an infected human or animal Cryptosporidiosis: Cryptosporidium spp. intestines stool widespread
Example of ascariasis (ascaris infection) - Difficult surgical procedure in South Africa on a gangrenous piece of bowel that had to be cut out; live ascaris worms are emerging. Piece of intestine, blocked by worms, surgically removed from a 3-year-old boy in South Africa. [57]
A bolus of worms may obstruct the intestine; migrating larvae may cause pneumonitis and eosinophilia. Adult worms have a lifespan of 1–2 years which means that individuals may be infected all their lives as worms die and new worms are acquired. [13] Eggs can survive potentially for 15 years and a single worm may produce 200,000 eggs a day. [2]
The pinworm (species Enterobius vermicularis), also known as threadworm (in the United Kingdom, Australia and New Zealand) or seatworm, is a parasitic worm.It is a nematode (roundworm) and a common intestinal parasite or helminth, especially in humans. [7]
Once in the trachea, the worms are coughed up into the pharynx and then swallowed again, after which they pass through the stomach and into the small intestine, where they mature into adult worms. [ 5 ] [ 7 ] The adult worms begin producing fertilized eggs within 60–65 days of being swallowed; [ 7 ] females produce as many as 200,000 eggs per ...
Using the scolex, it attaches to the intestinal wall. The larva mature into adults about 5 to 12 weeks later. Adult worms can live about 25 years in the host. [3] Usually, only a single worm is present at a time, but multiple worms are also reported.