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Risk of HIV/AIDS in one-time gay sex

Question: 

pre-cum was on my anus and I discovered irritation that started to bleed

Answer: 

Hi there,

Thank you for your inquiry. From what we gather from the question, you were wondering about the possibility of HIV transmission through the act of anal frottage from a penis (which had pre-cum) to your anus (which began to bleed).

From the information given, this scenario is determined to be Low Risk (Evidence of transmission occurs through these activities when certain conditions are met). We determine it to be of Low Risk due to the satisfaction of our HIV Transmission Equation.

In order for HIV transmission to occur, we look for three main elements of exposure. These include: HIV positive fluid (semen, pre cum, vaginal fluid, blood, and breast milk), direct access to the bloodstream (open bleeding on your anus), and a High, Low, or Negligible Risk activity.

In your case, the transmission equation is satisfied due to the open and bleeding wound you described on your anus, coupled with pre cum (a fluid that may contain HIV positive fluid), with the assumption that the fluid is being directly rubbed into your anus.

Recommendation: Refer to a health care provider for HIV testing.

Protective measures can be taken in order to create a barrier of protection against HIV transmission in the act of a sexual encounter such as the one described above. Consider this information from the CDC: "Latex or polyurethane male condoms are highly effective in preventing HIV and certain other STDs when used correctly from start to finish for each act of anal sex. People who report using condoms consistently reduced their risk of getting HIV through insertive anal sex with an HIV-positive partner, on average, by 63%, and receptive anal sex with an HIV-positive partner, on average, by 72%" (1).

Further, additional protective measures can be taken besides condoms such as PrEP (Pre-Exposure Prophylaxis) and PEP (Post-Exposure Prophylaxis) that may help lower your risk of HIV acquisition in the future.

All the best,

AIDS Vancouver Online/Helpline, Cody