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i made sex with a csw is there any chances?

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dear sir i want to know that, i made sex with a csw then after few days i afraid about hiv, then after 4 week i give a medical test that becomes negative, actually i forget that i used condom or not, this encounter only for less than one minute and she did not discharge any semen or cum, right now i have no any symptoms and i increasing my body and weight also. i never take any alcohol, drug or smoking. so please help me is there any chances.

thanks and regards.

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replied December 1st, 2011
HIV and AIDS Answer A29059
Hello and welcome to e health forum.

A single sex encounter with a HIV person, has a risk of 0.04 % of transmission. For successful transmission, multiple sexual encounters with the same person is usually needed.

Since you had the HIV test after 4 weeks of the exposure, it is most probable that you do not have HIV infection.

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