If you are concerned about hygiene, ask your partner to wash first - water and a gentle washcloth should do the trick. The person who perform oral sex have the highest risk. The highest risk is for those who practice oral sex to a man with HIV, and he ejaculates into the mouth. For women, the levels of HIV in vaginal fluid vary. But they can be a good tool for understanding risk. You can then work your way in to the anus by circling your tongue around the outer area and finally inserting your tongue. If you don't have HIV, you may decide only to have insertive oral sex someone giving you oral sex as this is safer than receptive oral sex giving someone else oral sex. Is HIV really this hard to transmit, especially in light of the alarming statistics we are bombarded with? The risk of HIV being passed on during oral sex centres on fluid containing HIV semen, vaginal fluid or blood finding a way into the bloodstream of an HIV-negative person via the mouth or throat, which is more likely if there is inflammation, or cuts or sores present. And some infections caused by bacteria or viruses can be passed on through oral—anal sex, such as hepatitis A or E. Of course, these numbers will vary based on correct and consistent use of the prevention strategy. There have been no documented cases of someone acquiring HIV through receiving cunnilingus from someone living with HIV. HIV transmission through 'insertive fellatio', which means an HIV-negative man receiving oral sex from a person living with HIV, is very low risk and may be impossible. Among the routes of transmission, the one with the highest prevalence is the sexual route; either through anal sex, or vaginal. You may decide that the risks of oral sex are low enough for you to continue your regular behaviour.