E. coli bacterial culture (white) being grown in a petri dish on a nutrient medium (red). There are several different strains of E. coli (Escherichia

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E. coli bacterial culture (white) being grown in a petri dish on a nutrient medium (red). There are several different strains of E. coli (Escherichia coli) bacteria. Some strains are non-pathogenic and are found in human intestines. Other strains cause food poisoning with bloody diarrhoea. These strains can be ingested from contaminated beef and milk. Urogenital infections are also possible.

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Photo credit: © CC STUDIO/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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