Any confirmed cases of hiv from getting a blowjob from a positive partner? so after 40 years, this is still essentially no risk with no verified cases? do hiv doctors at healthtap agree? several reputable sites say no risk. san fran city clinic?

By Healthline website: "insertive oral sex has a much lower risk of transmission. Enzymes in the saliva can be protective in that they neutralize many viral particles. In fact, infection is only likely to be possible if the person giving oral sex is bleeding from the gums, a cut, or an ulcer in their mouth and is HIV-positive". The risk is there although rare & nobody can say no risk.

Those sites and SF City clinic (highly respected!!) are correct. There has never been a proved case of HIV transmission oral to genital. Even based on patient interviews -- i.e. how HIV positive persons believe they may have been infected -- CDC calculates a risk of 1 in 20,000, equivalent to receiving BJs by HIV infected partners once daily for 55 years before transmission might be likely.