3 months ago I had a sexual encounter with a sex worker and a friend ( a guy), during the act we used condoms but now I'm scared because I got the Clamydia and because I don't remeber if she changed the condom when we swopped. Is it possible to get the HIV in this way from her?

I did the prick test after 23 days and I'm waiting the result of the blood test but I'm seriously worried about that also because it was a stupid thing to do.

Thank you

Hi there and thanks for reaching out to the AIDS Vancouver Helpline. My name is Colin and I'm happy to answer your questions today.

I understand you're concerned about the possibility of acquiring HIV from the outside of a condom after it may have been shared with you and your sex partners. Let me give you some information to put your mind at ease.

Right away I can tell you this would be considered a low risk encounter. For there to be a successful transmission of HIV there must first be HIV present. Next there must be both an exchange of bodily fluids with direct access to the bloodstream. Additionally, and most important for your encounter, once exposed to air for even a second, the HIV is rendered non-transmissible meaning it can no longer be passed on from person to person. In the exposure you describe above, protected intercourse with a condom that worked properly and didn't break, etc is considered low risk for HIV transmission. The fact that the condom may not have been swapped between you and your female partner poses no risk *specifically for HIV* because any virus on the condom would have been exposed to air long enough to make it non-transmissible; however, sharing condoms does put you at high risk for most other STIs and is not recommended.

With regards to the tests you've taken, the finger prick test will detect upwards of 95% of new transmissions between 4-6 weeks with results considered conclusive after 12 weeks (3 months; 84 days). Depending on the blood test you took, it was most likely a 3rd Generation Test, or a 4th Generation Duo Test. If it was the 3rd Generation Test it will follow the same timeline as the finger prick test and will be considered conclusive after 12 weeks. If it was a 4th Generation Test (looking for antibodies as well as the P24 Antigen) then it is generally considered conclusive after 6 weeks. Regardless of the tests you took, 23 days post-exposure may be a little too early for an ideal testing [window period.]( Even though the exposure was low risk, for the best handle on your health and peace of mind, I would recommend testing again when you are able to get a conclusive result. If you are in Canada or the United States, I would recommend checking out [Aso411]( or the [CDC's Get Tested Site]( to find the nearest appropriate testing facility.

I hope I managed to answer your questions today. If you need any more information please don't hesitate to contact us again.

All the best,


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