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Most of animals including humans have E.coli in their intestines, which is natural environment for them to live. They are even beneficial for you as they fight with alien bacteria that could cause disease through your Digestive tract.

The problem by E. coli is caused when they are consumed orally (with food or water). Such contamination can cause food poisoning.

Food consumption of contaminated food by E. coli shows symptoms such as diarrhea and abdominal pain.

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Q: How can you tell an animal has E. coli?
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