In the old days, we cooked hamburgers rare, juicy and flavorful. In recent years, because of E. coli 0157:H7, we’ve had to content ourselves with hamburgers that were gray and dry or run the risk of serious illness. 0157:H7 is the relatively new and vicious “Jack-in-the-Box” bacteria that killed four kids in Seattle in 1993. It was seen first by researchers in the 1980s. Since then, it has killed hundreds and sickened thousands more with bloody diarrhea, severe abdominal cramps, and even liver failure....
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