May 23, 2003
What is the chance you can get infected with HIV by fellatio (if you are the guy) by an HIV infected woman both if unprotected or with condom use?
Response from Mr. Kull
The chances for transmission of HIV during insertive fellatio (getting a blowjob) are practically zero. The primary reason for this is that saliva is not know to be a vehicle for transmission. There are no known cases of transmission through contact with saliva (oral sex or kissing) documented by the CDC.
The saliva of HIV infected people contains little to no virus, and the virus that is found in saliva is often inactive (not infectious). Studies have found that a protein in saliva inactivates HIV (up to 90% of virus was inactivated in one test tube study), and there are other attributes of saliva that may contribute to the noninfectious quality of saliva.
It is possible to transmit other sexually transmitted infections through oral sex, although you are greater risk for most sexually transmitted infections during vaginal or anal sex. See oral sex stds.
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