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E. coli bacteria normally live in the intestines of healthy people and animals.
Most types of E. coli are harmless or cause relatively brief diarrhoea.
“But a few strains, such as E. coli O157:H7, can cause severe stomach cramps, bloody diarrhoea and vomiting,” warns the Mayo Clinic.
According to the health body, signs and symptoms of E. coli O157:H7 infection usually begin three or four days after exposure to the bacteria.
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