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Tip of Penis - Anal

Question: 

Hello,

Thanks for your service, it is great help for all of us that want to know more about safe sex practices.
I am really worried about a sexual intercourse that I had yesterday; and I could not really get an answer to my question or assess if I were exposed to the risk of getting HIV.

I have met with a guy that I do not know, and I wanted to have anal sex with him.
Yesterday, I was a bit tipsy and started pushing my penis on his anus without a condom. I think that I have entered in it a bit, for a very brief moment. To be precise, I did not enter with my full head of the penis, but slightly with the tip. I read only that there is a chance that HIV can pass through the head of the penis if it comes in contact with the anal fluids.

I am worried if I should worry about this intercourse, and if I should take PEP.

Thanks in advance for your response.

Answer: 

Hello,

Thank you for your inquiry. From what we gather from the question, you were asking about the possibility of acquiring HIV through the tip of your penis in contact with someone's anus. From the information given, this scenario is determined to be High Risk (Evidence of transmission through these activities and is the majority of cases of transmission).

The scenario mentioned above does meet the three components of the transmission equation. Refer to the Transmission Equation for more information on HIV transmission. You mentioned that the encounter was brief and that only the tip of your penis came into contact with his anus, but there is a possibility that your urethra came into contact with rectal secretions, which are able to transmit HIV, during the unprotected anal sex encounter.

If you are concerned about a scenario in which HIV transmission could have occurred, PEP (Post-exposure prophylaxis) is an excellent intervention method to lower your risk of acquiring HIV after a high-risk activity. Please note that PEP works best when taken immediately (within 72 hours) of the exposure (1). If you are continuously engaging in high risk activities there are other biomedical approaches, such as PrEP (Pre-exposure prophylaxis) that can help lower your risk of acquiring HIV. Refer to your physicians for further information.

Recommendation: Refer to Physician for HIV test

Regards, AIDS Vancouver Helpline/Online, Marie