Table 3.
Prevalence of resistance among the E. coli isolates from groups of adults and young children to 17 antimicrobials.
| Antimicrobial Agent | Number (%) of E. coli Isolates | Test of Independence p-Value * |
|
|---|---|---|---|
| Adults | Young Children | ||
| n = 296 | n = 86 | ||
| Ampicillin | 113 (38.2) | 27 (31.4) | 0.2506 |
| Amoxicillin/Clavulanic acid | 40 (13.5) | 3 (3.5) | 0.0096 * |
| Piperacillin | 72 (24.3) | 5 (5.8) | 0.0002 * |
| Cephalothin | 86 (29.1) | 24 (27.9) | 0.8362 |
| Cefuroxime | 20 (6.8) | 3 (3.5) | 0.3152 |
| Cefotaxime | 4 (1.4) | 2 (2.7) | 0.6206 |
| Streptomycin | 137 (46.3) | 19 (22.1) | <0.0001 * |
| Gentamicin | 32 (10.8) | 9 (10.5) | 0.9273 |
| Amikacin | 30 (10.1) | 7 (8.1) | 0.5818 |
| Tetracycline | 63 (21.3) | 17 (19.8) | 0.7610 |
| Doxycycline | 46 (15.5) | 11 (12.8) | 0.5287 |
| Trimethoprim/sulfamethoxazole | 33 (11.1) | 12 (14) | 0.4776 |
| Chloramphenicol | 18 (6.1) | 0 | 0.0171 |
| Nalidixic acid | 39 (13.2) | 8 (9.3) | 0.3358 |
| Norfloxacin | 8 (2.7) | 2 (2.3) | 1 |
| Ciprofloxacin | 8 (2.7) | 2 (2.3) | 1 |
| Nitrofurantoin | 12 (4.1) | 3 (3.5) | 1 |
| Antimicrobial susceptibility characteristic | |||
| R | 224 (75.7) | 47 (54.7) | 0.0002 * |
| MDR | 90 (30.4) | 12 (14) | 0.0024 * |
R—resistant to at least one agent; MDR—multidrug-resistant. * Statistically significant.