Furthermore, participants were categorized into two groups, according to CD4 < 500 and CD4 ≥ 500; [(i) sampling point: CD4-high, n = 16, CD4-low, n = 36; (ii) set-point: CD4-high, n = 16, CD4-low, n = 19; (iii) 1-year-infection point: CD4-high, n = 10, CD4-low, n = 22)]. The gene discussed is CD4; the disease is infection.