Saturday, April 9, 2011

How to Avoid Angiostrongyliasis, the most common cause of eosinophilic meningitis or meningoencephalitis in humans

Angiostrongyliasis is the most common cause of eosinophilic meningitis or meningoencephalitis in humans,[1] caused by a nematode Angiostrongylus cantonensis or A. costaricensis. The parasite lives in rodents and infects snails, slugs, crabs, and shrimps, which then infect humans who consume them or vegetables contaminated by them.
Ingested Angiostrongylus cantonensis larvae migrate from the gastrointestinal tract to the brain, causing eosinophilic meningitis, with fever and headache.[2] Ingested A. costaricensis larvae mature into adult worms, which then reside in ileocecal arterioles; the worms release eggs into the intestine, causing local inflammation manifesting in fever, abdominal pain, and vomiting. Abdominal angiostrongyliasis may develop into a painful right lower quadrant mass or mimic appendicitis.[2] Here are measures you can take to prevent this serious infection.

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