TABLE 1.
Distribution of MTBC and NTM isolates recovered in each culture system
| Specimen type | No. of specimens tested | No. of ZN-positive specimens
|
No. (%) of mycobacteria recovered | Total no. (%) recovered
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MTBC
|
NTM
|
|||||||||||
| MTBC | NTM | All media combineda | MGIT 960 | Solid culture | Both methods | All media combineda | MGIT 960 | Solid culture | Both methods | |||
| Urine | 2,069 | NTc | NT | 53 (2.6) | 45 | 37 (82.2) | 33 (73.3) | 25 (55.5) | 8 | 7 (87.5) | 5 (62.5) | 4 (50.0) |
| Gastric aspirate | 1,985 | 13 | 0 | 178 (9.0) | 157 | 140 (89.2) | 117 (74.5) | 100 (63.7) | 21 | 18 (85.7) | 9 (42.9) | 6 (28.6) |
| Tissueb | 1,878 | 23 | 39 | 392 (20.9) | 178 | 172 (96.6) | 138 (77.5) | 132 (74.2) | 214 | 184 (86.0) | 143 (66.8) | 113 (52.8) |
| Pleural fluid | 1,730 | 1 | 1 | 51 (3.0) | 46 | 41 (89.1) | 29 (63.0) | 24 (52.2) | 5 | 5 (100) | 3 (60.0) | 3 (60.0) |
| CSF | 1,344 | 1 | 0 | 36 (2.7) | 36 | 35 (97.2) | 15 (41.7) | 14 (38.9) | 0 | 0 | 0 | 0 |
| Stool | 552 | 4 | 1 | 43 (7.8) | 32 | 21 (65.6) | 26 (81.3) | 15 (46.9) | 11 | 9 (81.8) | 4 (36.4) | 2 (18.2) |
| Total | 9,558 | 42 | 41 | 753 (7.9) | 494 | 446 (90.3) | 358 (72.5) | 310 (62.8) | 259 | 223 (86.1) | 164 (63.3) | 128 (49.4) |
a
Either MGIT 960, the combination of solid cultures, or both.
b
Specimen source comprised of lymph node, skin, kidney, spleen, liver, bone, lesions, and sources not specified.
c
NT, not tested.