CD4 and tuberculosis: In the Poisson regression model stratifying by CD4 count and HIV-RNA levels (Table 1), TB incidence was significantly associated with the following baseline characteristics: gender, HIV acquisition mode other than sex between men, participant geographic origin (particularly in those born in Africa, Asia, and Latin America), CD4 cell count <350 vs.≥350, HIV-RNA ≥400 vs. <400 copies /ml, and not being on ART at baseline (Table 1).