Table 1. Distribution of phylogenetic groups and virulence factors*.
| Group or factor | All isolates (n = 396) | FQ-susceptible (n = 200) | FQ-resistant (n = 196) | p values |
|---|---|---|---|---|
| A | 215 (54) | 103 (52) | 112 (57) | NS |
| B1 | 102 (26) | 59 (30) | 43 (22) | NS |
| B2 | 17 (4) | 15 (8) | 2 (1) | 0.001 |
| D | 62 (16) | 23 (12) | 39 (20) | 0.02 |
| papA | 28 (7) | 27 (14) | 1 (1) | <0.001 |
| papC | 29 (7) | 28 (14) | 1 (1) | <0.001 |
| sfa/focDE | 8 (2) | 8 (4) | 0 | 0.007 |
| afa/draBC | 11 (3) | 11 (6) | 0 | 0.001 |
| iutA | 131 (33) | 61 (31) | 70 (36) | NS |
| hlyD | 20 (5) | 20 (10) | 0 | <0.001 |
| kpsM II | 56 (14) | 54 (27) | 2 (1) | <0.001 |
| ExPEC | 44 (11) | 40 (20) | 4 (2) | <0.001 |
*FQ, fluoroquinolone; ExPEC, extraintestinal pathogenic Escherichia coli; NS, not significant. Screening for ExPEC was performed for 199 FQ-susceptible and 195 FQ-resistant isolates. Data are no. (%) of isolates.