The risk of HIV transmission through oral sex is low, but people have been infected this way. Oral sex can be made safer by using a latex barrier. For oral sex performed on a man, a non-lubricated condom is recommended. For oral sex performed on a woman, a dental dam (a thin square of latex), a non-lubricated condom that is cut open, or a plastic wrap can be used to cover the vagina. Oral-anal sex (rimming) is a high-risk activity that may be made safer by using a dental dam.