CD4 and tuberculosis: Compared to those presenting with CD4+ cell count > =500 cells/μl, patients with CD4+ cell count less than 350 cells/μl had 3.2 times (AHR = 3.16; 95% CI: 1.04 - 3.92) and between 350 – 499 cells/μl had 2.9 times (AHR = 2.87; 95% CI: 1.37 - 6.03) higher hazard of developing TB after controlling for past opportunistic illness, clinical WHO stage and IPT use (Table 4).