Table 2: Resistance to 1 or more antibiotics among 5,600 Escherichia coli urinary isolates against commonly prescribed antimicrobials.
| Number of agents to which isolates were resistant | Total no. of isolates (%) | No. of Isolates (%) resistant to | ||||
| Ampicillin | TMP/SMX | Cefazolin | Nitrofurantoin | Ciprofloxacin | ||
| 0 | 3,276 (58.5) | |||||
| 1 | 1,164 (20.8) | 995 (85.5) | 102 (8.8) | 1 (0.1) | 23 (2.0) | 43 (3.7) |
| 2 | 836 (14.9) | 794 (95.0) | 644 (77.0) | 83 (9.9) | 20 (2.4) | 131 (15.7) |
| 3* | 266 (4.8) | 266 (100.0) | 224 (84.2) | 75 (28.2) | 26 (9.8) | 207 (77.8) |
| 4* | 52 (0.9) | 52 (100.0) | 51 (98.1) | 48 (92.3) | 6 (11.5) | 51 (98.1) |
| 5* | 6 (0.1) | 6 (100.0) | 6 (100.0) | 6 (100.0) | 6 (100.0) | 6 (100.0) |
Abbreviation: TMP/SMX: Trimethoprim/Sulfamethoxazole; *: In all, 5.8% (324 of 5600) of isolates were resistant to three
or more antibiotics among the listed 5 antibiotics and defined as multidrug resistant.