TABLE 1

Strains used in the study

StrainRelevant characteristicsReference
E. coli O157:H7
    Sakaistx1 stx2a; clade 1, lineage I14
    EDL933stx1 stx2a; clade 3, lineage I15
    PA2stx2a; clade 8, lineage I/II9
    PA3stx2a stx2c; clade 8, lineage I/II9
    PA8stx2a; clade 8, lineage I/II9
    PA9stx2a; clade 8, lineage I/II9
    PA13stx2a stx2c; clade 8, lineage I/II9
    PA19stx2a; clade 8, lineage I/II9
    PA24stx1; clade 8, lineage I/II9
    PA25stx2a; clade 8, lineage I/II9
    PA28stx2a stx2c; clade 8, lineage I/II9
Other E. coli
    C600K-12 derivative43
    JM109Host for plaque assays44