Research Article
Phylogenetic Groups of Escherichia coli Strains from Patients with Urinary Tract Infection in Iran Based on the New Clermont Phylotyping Method
Table 2
Prevalence of resistance among various phylogenetic groups of E. coli isolates.
| | Antibiotics by class | Antibiotic | Phylogenetic group | Total | | B1 | B2 | F | U | D | E | Clade I | C | A |
| | Aminoglycosides | Gentamycin | — | 15 (10.7) | 3 (2.1) | 5 (3.6) | 1 (0.7) | 3 (2.1) | 1 (0.7) | 1 (0.7) | — | 29 (20.7) | | Amikacin | — | 5 (3.6) | — | 1 (0.7) | 1 (0.7) | — | — | — | — | 7 (5) |
| | Beta-lactams | Amoxicillin | 4 (2.9) | 50 (35.7) | 3 (2.1) | 31 (22.1) | 2 (1.4) | 9 (6.4) | 9 (6.4) | 6 (4.3) | 1 (0.7) | 115 (82.1) | | Ampicillin | 4 (2.9) | 49 (35) | 3 (2.1) | 30 (21.4) | 1 (0.7) | 9 (6.4) | 9 (6.4) | 6 (4.3) | 1 (0.7) | 112 (80) | | Cephalothin | — | 32 (22.9) | 3 (2.1) | 15 (10.7) | — | 5 (3.6) | 3 (2.1) | 4 (2.9) | 1 (0.7) | 63 (45) | | Ceftriaxone | — | 29 (20.7) | 3 (2.1) | 15 (10.7) | — | 5 (3.6) | 3 (2.1) | 4 (2.9) | 1 (0.7) | 60 (42.9) | | Cefotaxime | — | 29 (20.7) | 3 (2.1) | 14 (10) | — | 5 (3.6) | 3 (2.1) | 3 (2.1) | 1 (0.7) | 58 (41.4) | | Ceftazidime | — | 22 (15.7) | 2 (1.4) | 10 (7.1) | — | 4 (2.9) | 3 (2.1) | 2 (1.4) | 1 (0.7) | 44 (31.4) | | Ceftizoxime | — | 14 (10) | 1 (0.7) | 3 (2.1) | — | 2 (1.4) | 3 (2.1) | 1 (0.7) | 1 (0.7) | 25 (17.9) |
| | Sulfonamides | Trimethoprim-sulfamethoxazole | 1 (0.7) | 32 (22.9) | 2 (1.4) | 25 (17.9) | 2 (1.4) | 7 (5) | 6 (4.3) | 5 (3.6) | 1 (0.7) | 81 (57.9) |
| | Quinolones | Nalidixic acid | 1 (0.7) | 30 (21.4) | 3 (2.1) | 16 (11.4) | — | 5 (3.6) | 5 (3.6) | 2 (1.4) | 1 (0.7) | 63 (45) | | Levofloxacin | 1 (0.7) | 26 (18.6) | 3 (2.1) | 11 (7.9) | — | 5 (3.6) | 1 (0.7) | 2 (1.4) | 1 (0.7) | 50 (35.7) | | Norfloxacin | 1 (0.7) | 26 (18.6) | 3 (2.1) | 10 (7.1) | — | 5 (3.6) | — | 2 (1.4) | 1 (0.7) | 48 (34.3) | | Ofloxacin | 1 (0.7) | 25 (17.9) | 3 (2.1) | 10 (7.1) | — | 5 (3.6) | 1 (0.7) | 2 (1.4) | 1 (0.7) | 48 (34.3) | | Ciprofloxacin | 1 (0.7) | 26 (18.6) | 3 (2.1) | 9 (6.4) | — | 5 (3.6) | 1 (0.7) | 2 (1.4) | 1 (0.7) | 48 (34.3) |
| | Carbapenem | Imipenem | — | 23 (16.4) | 3 (2.1) | 7 (5) | — | 4 (2.9) | 1 (0.7) | 2 (1.4) | 1 (0.7) | 41 (29.3) | | Meropenem | — | — | — | — | — | — | 1 (0.7) | — | — | 1 (0.7) |
| | Nitrofurans | Nitrofurantoin | — | 1 (0.7) | — | — | — | — | 1 (0.7) | — | — | 2 (1.4) |
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Numbers in parenthesis are percentages.
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