States where persons infected with the outbreak strain of E. coli O157:H7 live, United States, by state

The cluster includes 26 persons from 8 states infected with matching strains of E. coli O157:H7. The number of ill persons identified in each state is as follows: California (1), Connecticut (6), Massachusetts (8), Maryland (1), Maine (4), New Hampshire (4), New York (1), and Vermont (1). Of these, the genetic associations of 24 human isolates and both of the product isolates have been confirmed by an advanced secondary DNA test; secondary tests are pending on others. Depending on the results of continuing laboratory testing and ongoing case finding, the number of persons determined to be in this cluster may increase or decrease.