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HIV Prevention  (Expert Forum)
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Recent Possible exposure through CSW in China
Answered by
Edward W Hook, MD - HIV Prevention, stds
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Recent Possible exposure through CSW in China

by BusinessTrav, Jan 28, 2008 09:03AM
Hi Dr.

II went to an upscale massage parlour in China, where I had an encounter with a female CSW.

The sequence of events are as follows:

Protected Oral Sex - DEFINITELY
She removed this condom, and placed on another one where I had protected vaginal sex with her for around 10-30 secs. I realised what a stupid move I was making, made her stop and asked her to repeat the oral sex.
She then removed this condom, placed another one on and performed oral sex for a further 2 minutes before I decided I had had enough and left. - DEFINITELY

The psychological fear is causing me to doubt whether she placed a condom on me for the sex, even though she was so careful to protect me twice during fellatio, and in the back of my mind I know we used a condom (I had been drinking though). The fact of changing condoms for each sex act, probably means she used a condom for the sex. I can remember the entire encounter apart from this, and it is as if there is a mental block on the few seconds of sex.

I lost 3lb/3days due to stress/lack of sleep. I am going to get myself tested tomorrow, but i know there is around a 4-6 week average window time for the HIV antibodies to show if infection has occured.

My specific questions:
1. Based upon the above (sketchy) description, what are my likely chances of infection.
2. What is the current thinking on chances of HIV infection from infected female to male, on a one off, short heterosexual unprotected sex?
3.  Will a HIV PCR test be accurate in 5 days?
4. Can i be tested and receive accurate results for other STD infections in 3 days (clamyd, ghonn, HSV, Syph)
5. My booster for Hep B vaccine was not received in 08/07 after receiving an (even faster) accelerated vaccine course in 08/06 of 1st day, 7th day, 14th day. Is it worth me getting an HBIG shot (3rd day) and starting another Hep B course considering the endemic of Hep B, the virulancy and the unknown efficacy of condoms?

Please help me on this matter

BT

by Edward W Hook, MD, Jan 28, 2008 12:02PM
To: BusinessTrav
Your concerns are almost certainly guilt/anxiety provoked.  The chances that  CSW who used a condom on you (remember, she was doing this to protect herself) didn't use a condom for genital exposure is negligible.  As for your specific questions:

1.  Zero
2.  Depends on the organism--HIV - 1 in 1000-2000 chance, gonorrhea or chlamydia, abut 20%, others, lower.  They do not apply to you however as I'm sure you were not exposed.
3.  No data to say yes or no.  At two weeks, probably accurate
4.  Yes
5.  No, your prior vaccine will be protective.

Hope this helps.  Nothing to be worried about.  EWH
Member Comments (5)

by BusinessTrav, Jan 29, 2008 07:10AM
To: Dr. Hook
Thank you for your comment.

Please could you inform me why the current concensus is that it is around a 1 in 2000 chance, yet so many people are being infected each year?

by Edward W Hook, MD, Jan 29, 2008 02:45PM
To: BusinessTrav
Do the math. there are billions of sexually active people, millions of whom are infected, and many sexual exposures.  Also, certain factors (inter-current STDs, rectal sex, etc) contribute to increased transmission.  EWH

by BusinessTrav, Jan 31, 2008 02:15AM
To: Dr. Hook
Dear Dr.

Thank you for your assessment - it has certainlly helped to assuage some of my fears. If you could please give me your opinion on this last factor, it would help me greatly.

Currently I am with a long term partner (g/f), and would very much like to stay in that relationship. Obviously what I done i will regret for the rest of my life. I feel i am under a moral and ethical obligation to prevent her being exposed to any risk at all, however telling her of the encounter and my fears will certainly end the relationship with no hope of reprisal, and with all the stigma attached. Simply not having sex with her for 3 months for conclusive results, without a valid excuse is not an option either.

Based on your assessment of my low level of risk, If I have the full screening of STD's and HIV Duo on 28 days, as well as a HIV PCR on 12 days, which all turn out to be negative, as well as no obvious HSV breakouts in that time, could I conservatively say that I have gotten away with this incredibly stupid encounter and can return to unprotected sex with her?

I have also taken 2g as a single dose of Azithromycin 2 days ago, which I now feel was not a great move as a -'ve chlamydia or ghonorreah test in the absence of this self-dose would have further assuaged my fears of unprotected sex.

Best regards,

BT

by Edward W Hook, MD, Jan 31, 2008 01:50PM
To: BusinessTrav
Yes, if all of your tests were negative as you describe you could have a high degree of confidence that you did not get an STD or HIV from your exposure.  In addition, having taken azithromycin makes it sure that you do not have gonorrhea, chlamydia or nongonococcal urethritis (NGU).  In such a situation (antibiotics, negative tests as you describe).  I would think that you could go forward with unprotected sex with your GF.  

EWH
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