Anal sex is the highest-risk sexual behavior for HIV transmission. Vaginal sex has a lower risk, and activities like oral sex, touching, and kissing.
For unprotected anal intercourse with an HIV-positive partner with a fully suppressed viral load, the The per-act risk for the insertive partner in anal sex is comparable to the per-act risk for the . AIDS, ,
The risk of HIV transmission during anal intercourse may be around 18 times greater than during vaginal intercourse, according to the results of.