Mary M Winnett

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A multistate outbreak of Escherichia coli O157:H7 infections occurred in the United States in June and July 1997. Two concurrent outbreaks were investigated through independent case-control studies in Michigan and Virginia and by subtyping isolates with pulsed-field gel electrophoresis (PFGE). Isolates from 85 persons were indistinguishable by PFGE. Alfalfa(More)
NOT E: This c ase study is based o n two re al-life outb reak inve stigation s underta ken in Michigan and Virginia, in 1997. Some aspects of the original outbreaks and investigations have been altered, however, to assist in meeting the desired teaching objective s and allo w com pletion o f the case stu dy in less th an 3 ho urs. Students should be aware(More)
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