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Escherichia coli (E. coli) 0157:H7 showing flagella (pseudoreplica technique). The bacterium is a known cause of foodborne illness. The strain of E. coli, 0157:H7, was first recognized in 1982 during an outbreak of severe diarrhea that was caused by contaminated hamburgers. Infection can be prevented by making sure that meat is cooked thoroughly.
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