As the risk of transmission through oral sex is estimated to be much lower than for vaginal and anal intercourse in the absence of antiretroviral therapy, it is implausible that the risk of transmission through oral sex is not affected in the same way as other sexual transmission risks when effective treatment suppresses viral load. When HIV is not fully supressed, the risk of HIV transmission through the mouth is certainly smaller than through vaginal or anal intercourse. If undamaged, the tissues of the mouth and throat are thought to be less susceptible to infection than genital or anal tissues, and an enzyme in saliva also acts to inhibit HIV. Very few cases of transmission through oral sex have been reported amongst gay men despite the continued practice of oral sex often with ejaculation into the mouth by large numbers of men over many years. There are no reliable reports of HIV being transmitted from the mouth to the genitals. Cases of transmission via cunnilingus are extremely rare, and the reliability of these reports is questionable.
Can you get HIV through oral sex?
Oral Sex and HIV: What Are the Risks?
The virus is transmitted between partners when the fluids of one person come into contact with the blood stream of another person. This contact can occur from a cut or broken skin, or through the tissues of the vagina, rectum, foreskin, or the opening of the penis. Oral sex ranks very low on the list of ways HIV can be transmitted. However, the risk of contracting HIV through oral sex is not zero. The truth is, you can in theory still contract HIV this way. It may be difficult to know where the transmission occurred. There are no documented cases of HIV being transmitted between partners through cunnilingus oral-vaginal sex.
Preventing Sexual Transmission of HIV
The chances of transmitting HIV through oral sex are very low. A person can still take preventive measures, such as by using a condom. HIV spreads through some bodily fluids.
Most people who get HIV get it through anal or vaginal sex, or sharing needles, syringes, or other drug injection equipment for example, cookers. But there are powerful tools that can help prevent HIV transmission. HIV can be transmitted from a mother to her baby during pregnancy, birth, or breastfeeding.