Jam1316
Dear Sir/Madam,  I did stupid thing last week. I let the guy ejaculated on my penis while my penis still erected. I am worry the semen can get into my urethra. i did not involve anal sex or oral sex, just masturbated each other. I have searched many topics regading this issue on this forum and i confused. Some posts you said that this was No risk because when the semen was out of the urethra, exposing to air, hiv could not survive and therefore cannot be transmitted. Howver, some posts you said that urethra is also provided direct access to the bloodstream, so this activity (contact with semen) is of Negligible Risk. Please  advise me, I am very stress and can not sleep.



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helpline-volunteer
Hi there,

Thank you for your inquiry. From what we gather from the question, you were asking about the risk of HIV transmission from semen on your penis.

From the information provided, this scenario is determined to be Negligible Risk (there is no evidence or no documented cases of transmission, however, there is a theoretical possibility of transmission under certain extenuating circumstances).

Theoretically, the scenario above meets two out of three components of the HIV Transmission Equation (see chart below) because we have a theoretical avenue for direct access to the bloodstream as well as a bodily fluid. For HIV transmission to be possible, all three components must be met.

Helpline Transmission Equation .jpg
HIV transmission requires the presence of HIV positive fluid (such as semen, vaginal fluid, pre-cum, rectal fluid, breastmilk, etc), coupled with a High, Low, or Negligible Risk activity, that provides the virus with direct access to the bloodstream

In this case, there was no High Risk activity (such as unprotected anal sex) or Low Risk activity (such as performing oral sex without a barrier). 

While it is most likely that the semen only superficially contacted your penis (and therefore the oxygen inactivation consideration you were discussing would negate the risk for HIV transmission), a theoretical possibility does exist that HIV particles may have travelled through your urethra. If you are anxious about your risk in this situation, I would advise you to seek advice from a healthcare professional.

Recommendation: There is no evidence or no documented cases of transmission. Refer to a healthcare professional for more personalized answers.

All the best,
AIDS Vancouver Helpline/Online, Shirley

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