Yes, there are many people who have sucked HIV+ dick for years and they have not gotten infected. However, there are also people who insist that they got HIV infected from sucking dick. I doubt they are all lying like President Bush does.
I have a file of numerous studies that have found the risk to be small to zero. Based on these studies, I guess that the risk is about 1 out of 2000 you will be infected. In other words, it might take several years to become infected.
All of these studies were unable to collect a large enough sample to accurately calculate the risk. Lack of research funds is the primary reason (thanks to homophobic Christian-Republican politicians who do not want to fund sex research).
The best estimate for oral sex risk was published in the following large scale study (you do not need to be a PhD to see that the risk is not zero):
The Johns Hopkins Bloomberg School of Public Health
American Journal of Epidemiology - Volume 150 Number 3 - August 1, 1999
Per-Contact Risk of Human Immunodeficiency Virus Transmission between Male Sexual Partners. Eric Vittinghoff, John Douglas, Frank Judson, David McKirnan, Kate MacQueen, and Susan P. Buchbinder (Department of Epidemiology and Biostatistics, University of California San Francisco, 74 New Montgomery, Suite 600, San Francisco, CA 94105)
Am J Epidemiol 1999;150:306-11 August 1, 1999
The risk of human immunodeficiency virus (HIV) transmission from various types of homosexual contact, including oral sex, is of biologic, epidemiologic, and public health importance. The per-contact risk of acquiring HIV infection from specific acts was estimated in a prospective cohort study of 2,189 high-risk homosexual and bisexual men, conducted in San Francisco, California; Denver, Colorado; and Chicago, Illinois, in 1992--1994. During 2,633 person-years of follow-up, 60 seroconversions were observed. The estimated per-contact risk of acquiring HIV from unprotected receptive anal sex (URA) was 0.82 percent (95% confidence interval: 0.24, 2.76 percent) when the partner was known to be HIV+ and 0.27 percent (95% confidence interval: 0.06, 0.49 percent) when partners of unknown serostatus were included. There was heterogeneity in per-contact risk, with nine seroconversions occurring after only one or two episodes of URA. The per-contact risk associated with unprotected insertive anal and receptive oral sex with HIV-positive or unknown serostatus partners was 0.06 and 0.04 percent, respectively. URA accounted for only 15 percent of all reported sexual activity by seroconverters. As lower-risk practices become more common, they may play a larger role in propagating the epidemic and should also be addressed by interventions targeting high-risk homosexual and bisexual men.
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