The risk of contracting HIV by drinking the blood of a person with AIDS also depends on the concentration of HIV in the blood. If a person with AIDS has been treated with antiretroviral therapy, the virus in the blood may be very low and generally will not lead to infection. However, if the person has not undergone antiretroviral treatment and the concentration of HIV in the blood is relatively high, HIV infection may occur. Firstly, because the HIV level in the blood is higher, and secondly, the blood comes into contact with the mucous membrane of one’s mouth and the mucous membrane of the digestive tract. If the blood only touches the person’s skin, it will not cause infection, but if it touches the mucous membranes, there is a possibility of infection. If the oral mucosa or digestive tract mucosa has small wounds, ulcers, or bleeding, the risk of infection increases. Therefore, there is a possibility of HIV infection if you drink the blood of an AIDS patient.