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pinworm

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pinworm /pin·worm/ (pin´wurm) oxyurid.
pin·worm (pnwûrm)
n.
Any of various small nematode worms of the family Oxyuridae that are parasitic on mammals, especially Enterobius vermicularis, a species that infests the human intestines and rectum. Also called seatworm, threadworm.

Pinworm
Enterobius vermicularis, a nematode worm of the family Oxyuridae that causes parasitic infestation of the intestines and cecum. Pinworm is endemic in both temperate and tropical regions and common especially in school age children.
Mentioned in: Antihelminthic Drugs

pinworm.
oxyurid [ok″se-u´rid]
an individual organism of the superfamily Oxyuroidea; called also pinworm.

pinworm
any oxyurid, especially Oxyuris equi and Probstmayria vivipara both in horses, Passalurus ambiguus in rabbits, Syphacia obvelata in hamster and mouse.

pinworm
Enterobius vermicularis, seatworm; threadworm Microbiology
A small–visible to the naked eye—whitish worm found in North America; adult pinworms live in the colon, laying eggs outside the anus during the night and spread directly from contaminated clothing, articles, hands, or indirectly by aerosol, from which the eggs are inhaled or swallowed; eggs hatch in the small intestine and travel to the colon where they mature


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Your son catches them when he accidentally eats pinworm eggs, which can be picked up from towels, toilets and toys, but most likely from scratching his own bottom.
There are many different forms of parasites but the most popular ones are roundworms,hookworms, tapeworms and pinworms.
Spring (March) An Ivermectin based product controls large strongyles, small strongyles, pinworms, ascarids, hairworms, large-mouth stomach worms, bots, lungworms, and intestinal threadworms.
 
 
 
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