CD4 and tuberculosis: Having started HAART during TB treatment was associated with significantly better survival and the aHR was 0.11 (95% CI 0.06–0.21); stratifying the cases into CD4+ lymphocyte counts >50 cells/mm3 and ≤50 cells/mm3 showed similar results, with aHR of 0.08 (95% CI 0.03-0.17) and 0.12 (95% CI 0.04-0.37), respectively (data not shown).