CDC, public health and regulatory officials in several states, the U.S. Food and Drug Administration (FDA), and the U.S. Department of Agriculture's Food Safety and Inspection Service (USDA-FSIS) are collecting different types of data to investigate a multistate outbreak of E. coli O157:H7infections.. Epidemiologic and traceback data show that fresh, slivered onions served at McDonald's were ... More @Wikipedia
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