Table 1.
Prevalence of β-lactamases and int1 genes among E. coli populations.
| Source | N | Prevalence (%) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| CTX-M-1 Subgroup | CTX-M-2 Subgroup | CTX-M-9 Subgroup a | TEM | OXA | SHV | KPC b | int1 | ||
| Clinical | 11 | 7 (64) | 0 | 1 (9) | 11 (100) | 5 (45) | 0 | 0 | 7 (64) |
| Hospital WW | 22 | 21 (95) | 0 | 0 | 13 (59) | 19 (86) | 0 | 9 (41) | 17 (77) |
| Urban Influent | 15 | 11 (73) | 0 | 4 (27) | 11 (73) | 10 (67) | 0 | 0 | 8 (53) |
| Treated effluent | 16 | 13 (81) | 0 | 5 (31) | 12 (75) | 13 (81) | 0 | 0 | 9 (56) |
| Total | 64 | 52 (81) | 0 | 10 (16) | 47 (73) | 47 (73) | 0 | 9 (14) | 41 (64) |
a Statical difference between sources p = 0.005; b p < 0.001.