TABLE 3.
Extended-spectrum beta-lactams tested by participating laboratories
| Antimicrobial agent(s) tested | No. of laboratories |
|---|---|
| Ceftazidime, ceftriaxone | 9 |
| Ceftazidime only | 4 |
| Ceftazidime, ceftriaxone, cefotaxime | 3 |
| Ceftazidime, cefotaxime | 3 |
| Ceftazidime, aztreonam | 2 |
| Ceftizoxime only | 2 |
| Cefotaxime only | 2 |
| Ceftazidime, ceftriaxone, cefotaxime, aztreonam, ceftizoxime | 1 |
| Ceftazidime, ceftriaxone, cefotaxime, aztreonam | 1 |
| Ceftazidime, ceftriaxone, aztreonam | 1 |
| Ceftizoxime, ceftriaxone, cefotaxime | 1 |
| Ceftazidime, ceftizoxime | 1 |
| Ceftriaxone only | 1 |
| Aztreonam only | 1 |
| No extended-spectrum cephalosporins or aztreonam | 6 |
| Total | 38 |