TABLE 2.
Summary of culture-positive isolates classified according to species and processing method
| Species | Total no. of culturepositive AFB specimens | No. of specimens with culture result by decontamination methoda
|
P | ||
|---|---|---|---|---|---|
| NALC/ NaOH only | CB-18 only | Both methods | |||
| MTBC | 29 | 4 | 1 | 24 | >0.05 |
| MAC | 29 | 3 | 8 | 18 | >0.05 |
| M. kansasii | 5 | 0 | 0 | 5 | |
| M. chelonae | 12 | 0 | 8 | 4 | <0.01 |
| M. fortuitum | 8 | 0 | 7 | 1 | <0.01 |
| M. gordonae | 8 | 4 | 4 | 0 | |
| M. avium-M. intracellulareM. scrofulaceum | 3 | 0 | 3 | 0 | >0.05 |
| Other | 5 | 2 | 3 | 0 | >0.05 |
| Unknown | 3 | 0 | 3 | 0 | >0.05 |
| Lost | 4 | 0 | 4 | 0 | <0.05 |
| Total | 106 | 13 | 41 | 52 | <0.01 |
a
The overall culture sensitivities were 61.3% for NALC/NaOH and 87.7% for CB-18 (P < 0.01). The MTBC culture sensitivities were 96.6% for NALC/NaOH and 86.2% for CB-18 (P > 0.05). The MOTT culture sensitivities were 48.1% for NALC/NaOH and 88.3% for CB-18 (P < 0.01).