TABLE 3.

Summary of clinical information for patients and HCWs with discordant QFT-GIT and QFT-Plus assay results^a

Subject no.b	Age (yr)/sexc	BCG vaccine	TST induration (yr)	Diagnosis of LTBI	QFT-GIT result	QFT-GIT TB Ag − nil (IU/ml)	QFT-Plus result	QFT-Plus TB1 Ag − nil (IU/ml)	QFT-Plus TB2 Ag − nil (IU/ml)	Additional patient and diagnostic informationd
HCW-1	49/F	Unknown	Negative	Unknown	Negative	0.24	Positive	0.52	0.19	NA
OCPHS-1	46/F	No	NA	Yes	Positive	0.36	Negative	0.24	0.21	Positive QFT-GIT result (TB tube value, 0.56 IU/ml) performed 1 yr prior to enrollment, employed in nursing facility, normal chest X ray, not treated
OCPHS-2	34/F	Yes	15 mm (2012)	Yes	Positive	0.45	Negative	0.32	0.32	Positive QFT-GIT result (TB tube value, 1.16 IU/ml) performed 6 mo prior to enrollment during pregnancy, immigrant from South Korea, not treated
OCPHS-3	61/M	No	NA	Yes	Positive	0.66	Negative	0.23	0.20	Positive QFT-GIT result (TB tube value, 3.65 IU/ml) performed 10 mo prior to enrollment, 8 yr in refugee camp in Ethiopia, completed 5/6 mo of INH at time of enrollment
OCPHS-4	79/F	Yes	Negative	Yes	Negative	0.25	Positive	0.27	0.50	Positive QFT-GIT result (TB tube value, 7.55 IU/ml) 2 yr prior, Cambodian immigrant, calcified granuloma in left lung, INH and rifampin not tolerated

^aHCW, health care worker; NA, not applicable; Ag, antigen.

^bOCPHS, Olmsted County Public Health Services.

^cF, female; M, male.

^dINH, isoniazid.