Table 3

IGRA (commercial or research assay) and TST results

Positive IGRAPositive TSTTotal positive in either or both tests
IGRA only10/94NA10/94 (10.6%)
TST and IGRA6/206/207/20* (35.0%)
  • * All participants underwent research IGRA screening, of the 20 participants who also underwent TST, discordance occurred in two cases (one was positive who had a negative IGRA result and one was negative who had positive IGRA result).

  • IGRA, interferon-γ release assay; NA, not applicable; TST, tuberculin skin test.