How can I prevent HIV and STI transmission during oral sex?

Although oral sex presents less of a risk than vaginal or anal sex for transmitting HIV and some other STIs, the risk still exists. Herpes is commonly passed between genitals and the mouth, and you can get a bacterial infection in your mouth or throat from an STI. 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 person with a penis, a non-lubricated condom is recommended. For oral sex performed on a person with a uterus, a dental dam (a thin latex square) 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.

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