date:Nov 20, 2012
STEC bacteria are grouped by serogroups (e.g., O157 or O145). The STEC serogroup found most commonly in U.S. patients is E. coli O157.
A total of 28 ill persons infected with the outbreak strain of STEC O157:H7 have been reported from five states. The number of ill people identified in each state with the outbreak strain is as follows: Connecticut (2), Massachusetts (2), New York (22), Pennsylvania (1), and Virginia (1).
Among persons for whom information is available, illness onset dates rang