Generally speaking, in individuals infected with HIV, if the CD4 count falls below 200, it progresses to the AIDS phase. If the CD4 count falls below 50, it indicates the late stage of AIDS, during which the body's immune function is severely compromised. This makes it easy to contract various opportunistic infections, opportunistic tumors, as well as AIDS-related inflammatory syndrome, wasting syndrome, etc. Once AIDS is definitively diagnosed, it is necessary to start timely and scientifically sound anti-HIV treatments as soon as possible.