Table 5.
Escherichia coli O157 isolates positive for putative virulence determinants
| Determinanta | No. (%) of isolates |
|
|---|---|---|
| Argentina (n = 60) | Australia (n = 60) | |
| tir255T | 60 (100) | 56 (93) |
| ECSP_0242 | 56 (93) | 55 (92) |
| ECSP_1773 | 16 (27) | 14 (23) |
| ECSP_2687 | 46 (77) | 54 (90) |
| ECSP_2870/2872 | 38 (63) | 24 (40) |
| ECSP_3286 | 36 (60)b | 1 (2)b |
| ECSP_3620 | 57 (95) | 58 (97) |
a
ECSP locus tags indicate putative virulence determinants identified in the E. coli O157 TW14359 genome (18).
b
Considered to be significantly different (P < 0.0007).