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Number of workers tested for TB by TST and IGRA, stratified by TST test.
| Period | TST used | % TST positive (n/N) | % IGRA positive (n/N) |
|---|---|---|---|
| January 2013–July 2014 | PPD tuberculin mammalian | 5.3 (66/1250) | — |
| August–December 2014 | Tubertest | 4.6 (15/321) | 12.8% (5/39)∗ |
| January–July 2015 | Tubertest | 7.3% (33/450) | 18.1% (6/33) |
| August–December 2015 | PPD tuberculin mammalian | 10.4% (27/269) | 18.5% (5/27) |
∗This data refers to the period of May–December 2014.
