TABLE 1.
Reidentification and clarithromycin resistance of M. fortuitum complex clinical isolates
| Characteristic | Value for the following species: |
||||
|---|---|---|---|---|---|
| M. fortuitum | M. peregrinumb | M. porcinum | M. septicum | M. conceptionense | |
| No. (%) of isolates identified by MLSAa | 44 (49) | 27 (30) | 10 (11) | 7 (8) | 2 (2) |
| Patient data | |||||
| Median (interquartile range) age (yr) | 62 (54–72) | 58 (55–63) | 65 (56–76) | 49 (40–84) | 43, 59 |
| No. (%) of female patients | 21 (48) | 13 (48) | 3 (30) | 3 (43) | 2 (100) |
| No. (%) of isolates from the following specimens: | |||||
| Respiratory specimen | 42 (96) | 27 (100) | 10 (100) | 7 (100) | 2 (100) |
| Blood | 1 (2) | 0 | 0 | 0 | 0 |
| Joint fluid | 1 (2) | 0 | 0 | 0 | 0 |
| No. (%) of isolates with the following susceptibility to clarithromycin: | |||||
| Susceptible | 2 (5) | 18 (69) | 0 | 0 | 2 (100) |
| Inducibly resistant | 37 (84) | 8 (31) | 9 (90) | 6 (86) | 0 |
| Resistant | 5 (11) | 0 | 1 (10) | 1 (14) | 0 |
a
Abbreviation: MLSA, multilocus sequencing analysis.
b
Drug susceptibility testing results for clarithromycin were not available for one M. peregrinum isolate.