CD4 and tuberculosis: In children with definite or probable TB, there was no difference in the median (interquartile range) CD4% between children with a positive IFN-γ ELISpot compared to those with a negative IFN-γ ELISpot (positive 19.12 (10.0-35.5) vs negative 19.7 (13.6-31.1), p = 0.78).