CD4 and lymphatic system disorder: Three factors were independently associated with a lower risk of AFB negativity, namely adenopathies (OR = 0.4 [95%CI: 0.2–0.93]), cavitation (OR = 0.1 [95%CI: 0.03–0.6]) and CD4 fewer than 50 /mm3 (OR = 0.4 [95%CI:0.2–0.90]) (Table 2).