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HIV Prevention  (Expert Forum)
 | 
HIV Risk
Answered by
University of Washington Seattle - WA
This forum is limited to prevention of HIV and to safe sex in general. If you believe you might have been exposed to HIV and want help to judge your risk, would like advice about HIV testing, or have questions about the effectiveness of condoms or the risks associated with specific sexual practices, this is the site for you.

IMPORTANT

No questions will be accepted on the treatment of HIV/AIDS or its complications, viral load, and similar topics. If you have questions about a specific STD other than HIV/AIDS, please visit the STD Forum. Questions that do not pertain to the above topics will be removed from the forum.

If you have not done so, please review other threads in our archives for questions similar to yours and Dr. Handsfield's replies. Questions that duplicate other frequent ones, for which abundant replies exist, and that have little educational value for other forum users, will be DELETED WITHOUT RESPONSE. YOUR PAYMENT WILL NOT BE REFUNDED. The most common examples of such questions are those about low risk exposures to HIV, such as oral sex, condom- protected intercourse hand-to-genital exposure, and nonsexual contact with possibly infected blood or body fluids as well as symptoms of early HIV infection.

HIV Risk

by Mac99, Jul 24, 2008 10:19AM
Last week I had an sexual contact in one night club in Makarska (Croatia) with one of their employee. She was a very nice girl, but unfortunately during the vaginal sexual contact I lost my condom and I did not feel it. It was the first time I visited night club like this (and definetly the last time...) I would like to ask - if it is possible to say - how much risk did that contact involved and if the HIV virus (if that girl was infected) transfers always through the first contact with an infected person or not. I did read in many internet websites, that the first HIV test can be done at least 6 weeks after a possible sexual contact with an infected person - is that right?

Thank you for any information!!!

by H. Hunter Handsfield, M.D., Jul 24, 2008 12:24PM
When a woman has HIV, the average risk of HIV transmission to her male partner is about once for every 2000 episodes of unprotected vaginal sex.  And statistically, is is most likely that your partner doesn't have HIV, so your risk is lower than that.  The standard HIV antibody tests almost always are positive by 6 weeks after a new infection; about 90% of the time, the test is positive by 4 weeks.

All things considered, you don't need to be tested for HIV after such an exposure, unless you have strong reason to believe the woman had HIV.  However, all people who are sexually active outside permanent, mutually monogamous relationships should be tested for HIV from time to time, like once a year.  So this might be a good time for it, since it's on your mind.

The same questions have been asked and answered many times; please scan the existing threads for more detailed discussions.

Best wishes--  HHH, MD




Member Comments (4)

by 90213, Jul 24, 2008 11:10PM
To: Dr HHH
Doctor I had a question about the risk, you say here that the risk is 1 in 2000 but other posts and the other Doctor including yourself say 1 in 1000, what is the real risk of a female with hiv passing it on to her male partner via vaginal sex and if the viral load is under 50 what is the risk then?

thanks for your help in advance!

by H. Hunter Handsfield, M.D., Jul 24, 2008 11:32PM
CDC estimates the risk at 1 in 1,000 for transmission from an infected male to a female partner.  It's estimated at 1 in 2,000 from female to male.  But both estimates are very rough.  Precise data to not exist.

There is virtually no risk through vaginal sex when the infected person has a viral load under 50.

by 90213, Jul 24, 2008 11:42PM
To: Dr. HHH
Thanks so much for the fast response. for my sake I hope the CDC is correct! and that a low load below 50 is also.

Thanks!
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