YUCK! Never eat SUSHI! Cook your food!
Rat lungworm disease is caused by parasite that impacts rats that then excrete worm larvae. Slugs and snails consume the larvae, which are then passed on to humans who eat raw produce, freshwater shrimp or land crabs that contain traces of the worms, according to Hawaii News Now. The parasitic worms trigger a rare meningitis that affects the brain and spinal cord.
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Thus the solid reasoning behind the food selection, and preparation rules in Leviticus.
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