Table 1.
Results of AFB smear, culture, and multiplex PCR
| Type | Subtype | No. of patients | Smear (+), N (%) | Culture (+), N (%) | mPCR, N (%) | IS6110 band (+), N (%) | MPB64 band (+), N (%) | Only IS6110 | Only MPB 64 |
|---|---|---|---|---|---|---|---|---|---|
| Group I | Confirmed OATB | 3 | 1 | 3 (100) | 3 (100) | 3 (100) | 43 (100) | - | - |
| Suspected OATB | 77 | - | - | 63 (81.8) | 56 (72) | 61 (79.22) | 2 (2.5) | 5 (6.4) | |
| Total | 80 | 1 | 3 (3.75) | 66 (82.5) | 59 (72.22) | 64 (80) | 2 (2.5) | 5 (6.2) | |
| Group II | Non-TB control group | 25 | - | - | - | - | - | - | - |
AFB acid fast bacilli, OATB osteoarticular tuberculosis, mPCR multiplex polymerase chain reaction