Allow at least an hour after any of these practices to let the wounds close themselves before you're exposed to semen or vaginal fluids.
Oral Sex and HIV Transmission
But the truth is that different things work for different people. What Are the Risks? However, it is still possible for HIV to enter through a cut or abrasion on the penis or through the lining of the urethra inside the tip of the penis or through immune cells on the foreskin. Anilingus can also transmit hepatitis A and B, intestinal parasites like Giardiaand bacteria like E. As Simon says above, There are no cases of people catching HIV from receiving oral sex with a person who has blood in their mouth.