Table 2.
Antimicrobial activity of 16 antibiotics tested against K. pneumoniae and E. coli by disk diffusion test
| No. of K. pneumoniae isolates (n = 52) |
No. of E. coli isolates (n = 24) |
|||||
|---|---|---|---|---|---|---|
| Antibiotics | Susceptible | Resistant | Resistance rate (%) | Susceptible | Resistant | Resistance rate (%) |
| Amoxicillin (AML) | 0 | 52 | 100 | 2 | 22 | 91.7 |
| Amoxicillin/clavulanic acid (AMC) | 36 | 16 | 30.8 | 23 | 1 | 4.2 |
| Ceftriaxone (CRO) | 30 | 22 | 42.3 | 4 | 20 | 83.3 |
| Ceftazidime (CAZ) | 37 | 15 | 28.8 | 7 | 17 | 70.8 |
| Cefoxitin (FOX) | 37 | 15 | 28.8 | 23 | 1 | 4.2 |
| Aztreonam (ATM) | 33 | 19 | 36.5 | 4 | 20 | 83.3 |
| Imipenem (IMP) | 47 | 5 | 9.6 | 22 | 2 | 8.3 |
| Meropenem (MEM) | 49 | 3 | 5.8 | 23 | 1 | 4.2 |
| Gentamicin (CN) | 43 | 9 | 17.3 | 24 | 0 | 0 |
| Tobramycin (TOB) | 45 | 7 | 13.5 | 24 | 0 | 0 |
| Ciprofloxacin (CIP) | 48 | 4 | 7.7 | 24 | 0 | 0 |
| Polymyxin B (PB) | 40 | 12 | 23.1 | 23 | 1 | 4.2 |
| Colistin sulfate (CT) | 45 | 7 | 13.5 | 24 | 0 | 0 |
| Chloramphenicol (C) | 0 | 52 | 100 | 24 | 0 | 0 |