TABLE 1.
Comparative analysis of ampicillin-sulbactam and amoxicillin-clavulanate susceptibility testing results
| Combination | Method | Amt of inhibitor | %
of isolates
|
||
|---|---|---|---|---|---|
| Susceptible | Intermediate | Resistant | |||
| Ampicillin-sulbactam | Agar dilution | 2:1 | 20 | 28 | 52 |
| Agar dilution | 8 μg/ml | 27 | 24 | 49 | |
| Microdilution | 2:1 | 21 | 17 | 62 | |
| Disk diffusion | 10 μg | 47 | 27 | 26 | |
| Amoxicillin-clavulanate | Agar dilution | 2:1 | 61 | 27 | 12 |
| Agar dilution | 2 μg/ml | 38 | 14 | 48 | |
| Agar dilution | 4 μg/ml | 63 | 20 | 17 | |
| Microdilution | 2:1 | 78 | 13 | 9 | |
| Disk diffusion | 10 μg | 74 | 17 | 9 | |