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. 2019 Oct 23;57(11):e00985-19. doi: 10.1128/JCM.00985-19

TABLE 2.

Percent positive by each test

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)
a

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.

b

QFT-GIT, QuantiFERON-TB Gold In-Tube; QFT-Plus, QuantiFERON-TB Gold Plus; TST, tuberculin skin test; T-SPOT, T-SPOT.TB.

c

Includes 49 class B1 immigrants and 31 close contacts.

d

Includes 17 close contacts.

e

Includes 31 non-U.S.-born persons.