An Outbreak of Escherichia coli O157 Infection Following Exposure to a Contaminated Building

Abstract
Escherichia coli O157, such as E coli O157:H7, causes approximately 70 000 illnesses and 60 deaths annually in the United States.1 Illness is often characterized by severe bloody diarrhea; renal failure from hemolytic-uremic syndrome (HUS) may occur in 3% to 7% of cases.2 Healthy cattle are believed to be the most important reservoir of E coli O157.2 Humans usually become infected from contaminated food or water or from contact with infected animals, infected humans, or either's excreta.3,4

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