CD4 and tuberculosis: Compared with patients with negative T-Spot.TB results, those with positive T-Spot.TB results had a significantly higher mean (± standard deviation [SD]) CD4 count (578.4 ± 306.5 vs 441.6 ± 295.9 cells/μL) and lower mean (± SD) plasma HIV RNA load (2.35 ± 1.23 vs 2.89 ± 1.50 log10 copies/mL) and were significantly older (mean age [± SD], 45 ± 13.1 vs 36.9 ± 10.8 years), less likely to be male (90.6% vs 97.6%), and more likely to have a history of old TB (37.5% vs 3.7%) and to receive cART at the time of T-Spot.TB testing (84.4% vs 61.0%) (all P values <0.05) (Table 1).