Table 2.

stx gene carriage in E. coli O157 strains

Source% of strains positive by PCR (no. positive/total)
stx1stx2stx2cstx1stx2stx1stx2cstx2stx2cstx1stx2stx2cNostx genes
Bovine3.3 (1/30)b 3.3 (1/30)010.0 (3/30)060.0 (18/30)13.3 (4/30)10.0 (3/30)
Human10.0 (4/21)33.3 (7/21)9.5 (2/21)0028.6 (6/21)9.5 (2/21)0