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E coli is found in human digestive tract, and causes disease by the fecal/oral route. if someone doesn't wash hands properly after using the toilet and touches food it can cause food poisoning. Salmonella is a bacteria which lives on healthy animals, mostly chickens. If meat isn't cooked at a high enough temperature to kill the bacteria, and they get into the human gut they also cause food poisoning.

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8y ago
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12y ago

uncooked food

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Q: Where do e coli and salmonella come from?
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