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Phylogenetic and Clonal Grouping of Extended-Spectrum β-Lactamase-Producing E. coli Isolates
| Phylogenetic/clonal group | ESBL positive (%) | ESBL negative (%) |
|---|---|---|
| Group A (n = 75) | 19 (25.3) | 56 (74.7) |
| Group B1 (n = 6) | 1 (16.6) | 5 (83.4) |
| Group B2 (n = 154) | 56 (36.4) | 98 (63.6) |
| Group D (n = 149) | 45 (30.2) | 104 (69.8) |
| ST131 (n = 38) | 25 (65.7) | 13 (34.3) |
| O25b/ST131 (n = 28) | 22 (78.5) | 6 (21.5) |
ESBL, extended-spectrum β-lactamase.
