Screening outcomes of contacts of patients with MDR-TB, New South Wales, Australia, 2000−2016
| Contacts who commenced screening | 247 (100) |
| Completed screening (total) | 215 (87) |
| Tested positive for LTBI | 105 (42.5) |
| TST positive (≥10 mm) | 104 (42.1) |
| IGRA positive (≥0.35) | 1 (0.4) |
| Tested negative for LTBI | 110 (44.5) |
| TST negative (<10 mm) | 108 (43.7) |
| IGRA negative (<0.35) | 2 (0.8) |
| Did not complete screening | 32 (13.0) |
| Did not attend | 26 (10.5) |
| Transferred out before completing screening | 3 (1.2) |
| Deceased before completing screening | 3 (1.2) |
| Chest X-ray findings | |
| Abnormal | 8 (3.2) |
| Normal | 207 (83.8) |
| Not documented | 32 (13.0) |
| Final diagnosis | |
| LTBI | 96 (38.9) |
| Newly diagnosed LTBI | 62 (25.1) |
| Prior history of LTBI | 34 (13.8) |
| Active TB disease | 1 (0.4) |
| Previous inactive TB (treated or not treated) | 8 (3.2) |
Data presented as n (%). MDR: multidrug resistant; TB: tuberculosis; LTBI: latent tuberculosis infection; TST: tuberculin skin test; IGRA: interferon-γ release assay.