It Takes Shoe Leather to Track the 'Smoking Gun'

The German E. coli outbreak is demonstrating the difficulty of identifying a "smoking gun" in outbreaks of foodborne illness.Some are asking, "Where is the evidence?" By "evidence," I believe they mean identifying the outbreak strain of bacteria in a food source that is genetically identical to clinical isolates by Pulse-Field Gel Electrophoresis (PFGE).There is another kind of evidence that is...

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