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Contact investigations: exposure of tuberculosis and QuantiFERON-TB Gold results compared with no exposure.
| TB case | Exposure No (% of total) |
Pos QFT-TB (% of risk group) |
|---|---|---|
| Household | 42 (8.7) | 59.5 |
| Family outside household | 41 (8.5) | 19.5 |
| Work | 104 (21.6) | 15.5 |
| Friends/occupational | 59 (12.3) | 39.0 |
| School | 10 (2.1) | 40.0 |
| Aeroplane | 5 (1.0) | 0 |
| No reported exposure | 220 (45.7) | 32.3 |
