MIMM 413 Lecture : march 7 2012- dr. ndao.docx
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15 May 2012
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Thichinella is the smallest nematode, and it looks like a virus (even though nematodes are round worms). This disease was not recognized for a long time, because the acute infection symptoms are inflammation, and then it goes away. Later on, a cyst can remain in muscle for years. You can get this from undercooked meat, and this will release the larvae that will infect the intestines. Most of nematodes have eggs (eg: ascaris), but with this parasite there are no eggs in stool. Main epidemiological features of trichinella species: spiralis is the most common trichinella, and you can find it everywhere in the world. T. native is what we have here up north. If people eat walrus meat and share it, there could be a lot of outbreaks. Problem with diagnosis is that when you take serum in acute phase, you do not see ab. The three with stars beside it do not have capsules.
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