TABLE 4.
Range of disk diffusion results for three quality control organismsa
| Strain | Erythromycin
|
Rifampin
|
Chloramphenicol
|
Trimethoprim-sulfamethoxazole
|
||||
|---|---|---|---|---|---|---|---|---|
| BGA | RL−C | BGA | RL−C | BGA | RL−C | BGA | RL−C | |
| S. aureus ATCC 25923b | 23–28 (25) | 21–25 (22) | 23–27 (24) | 14–21 (16) | 18–20 (18) | 16–19 (19) | 22–27 (24) | 21–23 (23) |
| B. pertussis ATCC 9797 | 39–42 (40) | 37–43 (41) | 20–27 (24) | 12–14 (14) | 38–42 (38) | 28–38 (31) | 27–34 (28) | 24–34 (29) |
| B. pertussis CDC-B100 | 6 | 6 | 23–26 (24) | 11–16 (14) | 33–40 (38) | 30–37 (30) | 26–29 (26) | 25–28 (26) |
a
Results are given in millimeters. Modes are shown in parentheses.
b
NCCLS quality control ranges for S. aureus ATCC 25923 are as follows: erythromycin, 22 to 30 mm; rifampin, 26 to 34 mm; chloramphenicol, 19 to 26 mm; and trimethoprim-sulfamethoxazole, 24 to 32 mm.