Based on the US CDC classification for HIV/AIDS and our stratified analysis of CD4+T cells (see Table 2), 13.30% of them had been at the AIDS stage and almost half of the studied subjects had lower CD4+T cell level (n = 559, 44.2%, <350 cells/μl), which were definitely eligible for ARV therapy according to the currently available Chinese ART protocol [28]. This evidence concerns the gene CD4 and AIDS.