Repeat of previous unanswered question re: relative risk of certain sex practices in magnetic relationship
Feb 21, 2010
I sent this question in a few days ago and haven't seen a response as of yet. I know that "relative" risk is not an easy thing to determine. However, it would be very helpful for me (HIV+) with undetectable VL and no other STD's to explain to my HIV- partner exactly how safe/unsafe (relative to unprotected oral) it is for me to insert my unprotected penis into his anus. I have no precum to speak of and I only put my penis in for 5 minutes, just long enough for him to get off. Can you help us to determine the relative risk of this behavior? I will say that this is behavior that has been in the past but will not be done from now on.
Response from Dr. Frascino
The CDC estimated per-act risk for unprotected oral sex versus unprotected receptive anal sex with a partner confirmed to be HIV infected is 0.5 per 10,000 exposures versus 50 per 10,000 exposure respectively. Therefore, the relative risk would be a hundred times greater. Unfortunately, we don't have a way to factor in many individual variables that could affect a specific coupling, such as viral load, concurrent STDs, trauma, immune integrity, viral strain, genetic factors, etc. The bottom line is that anal sex is much, much riskier than oral sex!
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