TABLE 2.
Categorya | Total no. | No. (%) positiveb |
|||
---|---|---|---|---|---|
TST | QFT-Plus | QFT-GIT | T-SPOT | ||
All | 508 | 180 (35) | 119 (23) | 103 (20) | 75 (15) |
Non-U.S. bornc | 436 | 177 (41) | 111 (25) | 97 (22) | 74 (17) |
Class B1 immigrant | 49 | 30 (61) | 24 (49) | 19 (39) | 19 (39) |
U.S. bornd | 71 | 3 (4) | 8 (11) | 6 (8) | 1 (1) |
Close contacte | 48 | 12 (25) | 4 (8) | 3 (6) | 3 (6) |
Class B1 immigrant, immigrant with abnormal chest radiograph but negative sputum smears and cultures in overseas examinations; close contact, ≥8 h/week exposure to TB case.
QFT-GIT, QuantiFERON-TB Gold In-Tube; QFT-Plus, QuantiFERON-TB Gold Plus; TST, tuberculin skin test; T-SPOT, T-SPOT.TB.
Includes 49 class B1 immigrants and 31 close contacts.
Includes 17 close contacts.
Includes 31 non-U.S.-born persons.