Persons infected with the outbreak strain of E. coli O157:H7 by state

As of April 1, 2011, eight persons infected with the outbreak strain of E. coli serotype O157:H7 were reported from Michigan (1), Minnesota (3), and Wisconsin (4). Reported dates of illness onset range from December 20, 2010 to February 16, 2011. Ill persons ranged in age from 15 to 78 years, with a median age of 63 years; 75% were male. Among ill persons, 50% reported being hospitalized, and none reported hemolytic uremic syndrome, which is a type of kidney failure that is associated with E. coli O157:H7 infections. No deaths were reported.