Table 3. Distribution of Extended-spectrum beta-lactamase (ESBL) / Plasmid-mediated AmpC beta-lactamase (PABL) and Plasmid-mediated quinolone resistance (PMQR) determinants of ciprofloxacin-resistant Escherichia coli isolates according to multilocus sequence typing (MLST) analysis.
| Major clones | Phylogenetic groups | Total (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ST131 (%) | ST393 (%) | ST1193 (%) | ST38 (%) | ST405 (%) | A (%) | B1 (%) | B2 (%) | D (%) | |||
| ESBL/PABL | |||||||||||
| CMY-2 | 0/35 (0.0) | 1/18 (5.6) | 0/16 (0.0) | 0/11 (0.0) | 0/10 (0.0) | 2/4 (50.0)b | 0/8 (0.0) | 0/59 (0.0) | 0/51 (0.0) | 2/122 (1.6) | |
| CTX-M-14 | 4/35 (11.4) | 0/18 (0.0) | 0/16 (0.0) | 1/11 (9.1) | 4/10 (40.0)a | 0/4 (0.0) | 0/8 (0.0) | 5/59 (8.5) | 9/51 (17.6) | 14/122 (11.5) | |
| CTX-M-15 | 8/35 (22.9) | 0/18 (0.0) | 0/16 (0.0) | 0/11 (0.0) | 2/10 (20.0) | 1/4 (25.0) | 1/8 (12.5) | 9/59 (15.3) | 5/51 (9.8) | 16/122 (13.1) | |
| CTX-M-14 + CTX-M-15 | 0/35 (0.0) | 0/18 (0.0) | 0/16 (0.0) | 2/11 (18.2)a | 0/10 (0.0) | 0/4 (0.0) | 0/8 (0.0) | 1/59 (1.7) | 2/51 (3.9) | 3/122 (2.5) | |
| PMQR | |||||||||||
| aac(6')-Ib-cr | 7/35 (20.0)a | 0/18 (0.0) | 0/16 (0.0) | 1/11 (9.1) | 0/10 (0.0) | 1/4 (25.0) | 0/8 (0.0) | 9/59 (15.3)b | 1/51 (2.0)b | 11/122 (9.0) | |
| qnrB + aac(6')-Ib-cr | 1/35 (2.9) | 0/18 (0.0) | 0/16 (0.0) | 0/11 (0.0) | 0/10 (0.0) | 0/4 (0.0) | 0/8 (0.0) | 1/59 (1.7) | 0/51 (0.0) | 1/122 (0.01) | |
| qnrS + aac(6')-Ib-cr | 0/35 (65.6) | 0/18 (0.0) | 0/16 (0.0) | 0/11 (0.0) | 0/10 (0.0) | 0/4 (0.0) | 0/8 (0.0) | 0/59 (0.0) | 1/51 (2.0) | 1/122 (0.01) | |
aP <0.05 and these relate to differences found when the distribution of ESBL/PABL or PMQR determinants for isolates of each ST were compared with those all other STs combined.
bP <0.05 and these relate to differences found when the distribution of ESBL/PABL or PMQR determinants for isolates of each phylogenetic group were compared with those all other phylogenetic groups combined.