Of the AIDS patients, the male to female ratio was 6.4:1, the average age was 46.1 ± 13.0 years (range: 11–76 years), the median CD4+ T cell count at admission was 63.5 (IQR: 18.0–165.0) cells/μl; and the average length of hospital stay was 21.7 ± 12.4 days (range: 1–75 days) (Table 2). This evidence concerns the gene CD4 and AIDS.