Epidemiology and traceback investigations conducted by local, state, and federal officials indicated that contaminated raw clover sprouts produced by Evergreen Fresh Sprouts, LLC of Idaho are the likely source of this outbreak. In interviews, 12 (86%) of 14 ill persons reported eating raw clover sprouts in the week before becoming ill.
As of June 9, 2014, a total of 17 persons infected with the outbreak strain of Shiga toxin-producing Escherichia coli O121 (STEC O121) have been reported from five states. The number of ill persons identified in each state is as follows: Idaho (3), Michigan (1), Montana (2), Utah (1), and Washington (10). 47% of ill persons have been hospitalized. No ill persons have developed hemolytic uremic syndrome (HUS), and no deaths have been reported.
The FDA conducted an inspection of Evergreen Fresh Sprouts’ facility on May 22-23, 2014; May 27-30, 2014; and June 6, 2014.
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