TABLE 2.
β-Lactam susceptibilities of 50 ampicillin-sulbactam-resistant E. coli bacteremic isolates
| Antimicrobial | No. (%) of isolates |
||
|---|---|---|---|
| Susceptible | Intermediate | Resistant | |
| Ampicillin | 0 (0) | 0 (0) | 50 (100) |
| Amoxicillin-clavulanate | 1 (2) | 8 (16) | 41 (82) |
| Ticarcillin | 0 (0) | 0 (0) | 50 (100) |
| Ticarcillin-clavulanate | 4 (8) | 26 (52) | 20 (40) |
| Piperacillin | 0 (0) | 2 (4) | 48 (96) |
| Piperacillin-tazobactam | 36 (72) | 8 (16) | 6 (12) |
| Cephalothin | 0 (0) | 6 (12) | 44 (88) |
| Cefoxitin | 40 (80) | 2 (4) | 8 (16) |
| Cefuroxime | 28 (56) | 7 (14) | 15 (30) |
| Ceftazidime | 46 (92) | 1 (2) | 3 (6) |