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Assumptions for various scenarios of consumption of beef imported from the United States of America to Taiwan when beef is infected by Escherichia coli O157:H7. (A) Receiving, transportation, and storage of beef, (B) Preparation of beef, (C) Consumption of beef, and (D) Exposure profile of E. coli O157:H7. Note: LN = log normal distribution; N = normal distribution; D-value = decimal reduction time; CFU = colony forming units.
