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Nephridiopores are present in ventral region. The nephridium consists of an opening called the nephrostome , a long convoluted tubule , and another opening called the nephridiopore. Body fluids are filtered in through the nephrostome and passed through the convoluted tubule system. [ 3 ]
[1] [5] They are the most common type of worm infection in Western Europe, Northern Europe and the United States. [5] School-aged children are the most commonly infected. [1] In the United States about 20% of children will develop pinworm at some point. [3] Infection rates among high-risk groups may be as high as 50%. [2]
The pinworm has a worldwide distribution, [25] and is the cause of the most common helminthiasis (parasitic worm infection) in the United States, western Europe, and Oceania. [21] In the United States, a study by the Center of Disease Control reported an overall incidence rate of 11.4% among children. [21]
The nephridium (pl.: nephridia) is an invertebrate organ, found in pairs and performing a function similar to the vertebrate kidneys (which originated from the chordate nephridia).
An Australian woman had a worm in her brain removed by doctors after eating Warrigal greens. Ophidascaris robertsi parasite is usually found in carpet pythons. Woman's series of odd symptoms were ...
The signs and symptoms of helminthiasis depend on a number of factors including: the site of the infestation within the body; the type of worm involved; the number of worms and their volume; the type of damage the infesting worms cause; and, the immunological response of the body. Where the burden of parasites in the body is light, there may be ...
Common symptoms of viral meningitis include fever, headache, neck stiffness, nausea, vomiting, sensitivity to light and confusion, says Nagata. "In severe cases, it may cause seizures, coma or a ...
Dracunculiasis, also called Guinea-worm disease, is a parasitic infection by the Guinea worm, Dracunculus medinensis. A person becomes infected by drinking water contaminated with Guinea-worm larvae that reside inside copepods (a type of small crustacean).
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