TABLE 2.
MICs of clarithromycin and azithromycin for MAC reported by four laboratories for each drug using BACTEC 460TB
| MAC strain | MICa of:
|
||
|---|---|---|---|
| Clarithromycin at pH:
|
Azithromycin at pH 6.8 | ||
| 6.8 | 7.3-7.4 | ||
| JWT | 128 (128) | 128 (64-128) | 1,024 (1,024) |
| JJL | 128 (128) | 128 (128) | 1,024 (1,024) |
| 513 | 128 (128) | 128 (128) | 1,024 (1,024) |
| 512 | 128 (128) | 128 (128) | 1,024 (512-1,024) |
| 511 | 128 (128) | 128 (128) | 1,024 (512-1,024) |
| 504 | 4 (4) | 4 (4) | 32 (32) |
| 116 | 4 (4) | 4 (4) | 32 (32)b |
| 104 | 4 (4) | 4 (4) | 32 (32) |
| 100 | 4 (4) | 4 (4) | 32 (32) |
| 101R | 128 (128) | 128 (128) | 1,024 (512-1,024) |
a
Values are modes. Values in parentheses are ranges. All values are in micrograms per milliliter.
b
One isolate at one site did not grow.