IFNG and tuberculosis: In the T-SPOT.TB assay, the mean (SEM) IFN-γ response to ESAT-6 and CFP-10 was higher in children with TB disease compared to those with latent TB infection (ESAT-6 396 (125.7) vs. 173.3 (51.1) spot forming cells per million PBMC (SFC/106), p = 0.07; CFP-10 421.3 (146.2) vs. 136.5 (35.6) SFC/106, p = 0.007).