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Positive detection results from the TS-SPOT and T-SPOT.TB assays. Venn diagram represents the number of positive results from two IGRA assays among the 155 active tuberculosis patients including 118 pulmonary TB and 37 extra-pulmonary TB cases (A) and 145 non-TB controls including 90 non-TB pulmonary disease patients and 55 health individuals (B). TS-SPOT and T-SPOT.TB were all negative in 29 ATB patients and 120 non-TB control subjects.
