Similarly, the percentages of IFN-γ+ cells were higher in TB patients as compared to Mtb- unexposed individuals (0.3 [0.2–0.5] vs 0.1 [0.1–0.3]), but were similar in TB patients and TB contacts (0.3 [0.2–0.5] vs 0.3 [0.1–0.4]; p>0.5, Fig. 2E). This evidence concerns the gene IFNG and tuberculosis.