After couple-years of follow-up and 77, acts of unprotected anal intercourse, no HIV transmission from HIV-positive partners took place and the researchers concluded that the risk of HIV transmission in these circumstances was effectively zero Rodger. If viral load is detectable, condomless anal intercourse is a highly efficient way of transmitting HIV, and it is considered a high-risk activity for both partners, although the exact degree of risk can depend on many factors. For each condomless act with an untreated HIV-positive partner, the risk of infection has been estimated at 1. However, it may be 10 to 25 times higher if the positive partner is recently infected. Studies have identified several other factors that further increase the risk of transmission. It is true that HIV infection occurs less frequently in men who solely take the insertive role than in men who engage in both roles, or men who practise receptive anal intercourse only Jin. However, being the insertive partner in condomless sex remains a high-risk activity.


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Try out PMC Labs and tell us what you think. Learn More. Jenness supervised the study, conceptualized and conducted the analysis, and led the writing. Begier and A.
We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission. Anal sex is the practice of inserting the penis, fingers, or a foreign object such as a vibrator into the anus for sexual pleasure. With the appropriate precautions, anal sex is mostly safe. However, there are different potential risks that may not be present in vaginal or oral sex. For example, the anus cannot naturally lubricate itself to reduce discomfort and friction-related concerns, such as skin injuries.