Originally Posted by notabook

There have been no real financed in-depth studies as there have been in for vaginal or anal intercourse. Considering that most who engage in oral sex also actively engage in other intercourse as well, it becomes even harder to engage the true risk of unprotective oral sex. Thusly with no real scientific data, and with it being nearly impossible to gauge the true transfer rate of JUST oral sex, the best estimate at the moment is you have around a 0.04 percent chance of contracting HIV from oral sex per contact, or about 4% per 100 HIV-infected incidents.