No I haven't seen that either. I suspect p24 is ~90% senstive at 2-3 weeks, but don't know for sure.
In the US and most western countries, almost all heterosexuals with HIV are the regular partners of infected people, not one-time contacts.
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Sorry, i meant to say in my question if you have ever seen a negative DUO test at 2-3 weeks turn positive?, I dont know if you are really familiar with those kind of tests. And how sensitive is the P24 around that time?.
I just dont understand why if the risk of HIV in heterosexuals is so low there are so many people infected this way.
Thank you Dr. I wont have any further questions.
No, I have never seen such a case. I'll bet there aren't 10 people per year in the entire US who acquire HIV from exposures like yours, maybe none at all.
Thanks a lot for your answers,this is just feaking me out a little bit.
I forgot to ask you if you have ever seen from your own experience someone testing positive after a few episodes of unprotected sex with a low risk partner like mine??
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You are overreacting in a big way. You obviously have a very inflated view of the risks of HIV in heterosexuals in industrialized countries. The chance a partner like you describe has HIV is almost zero. The risk you caught it, if she was infected, average once chance per 2,000 episodes of sex. Combine the two very low odds and you come up with less than 1 in a million chance you caught HIV. You didn't need testing at all.
1) Probably ~90-95% of newly infected people would have positive results at 3 weeks, by either p24 antigen or antibody.
2) Zero for practical purposes. See above.
3) The risk for STD is much higher than for HIV. You could have asymptomatic chlamydia, HPV, or herpes. Most likely none of those, but no way to know without testing.
4) Based on this particular event, I would recommend no testing at all and move on. However, all people who are sexually active outside mutually monogamous relationships should have routine STD and HIV testing from time to tlime, like every 1-2 years. If you haven't been tested recently, this seems like a good time, since it's on your mind.
Regards-- HHH, MD