The risk of getting an STD or spreading an STD to others through oral sex depends on several things, including the particular STD, type of sex, and number of sex acts performed. Anyone exposed to an infected partner can get an STD in the mouth, throat, genitals, or rectum.

Many STDs and other infections are spread through oral sex. A separate survey conducted during 2011 to 2015 found that 41% of teenagers aged 15-19 years reported having oral sex with a partner of the opposite sex. More than 85% of sexually active adults aged 18-44 years reported having oral sex at least once with a partner of the opposite sex. Oral sex is commonly practiced by sexually active adults.

Types of oral sex include the penis (fellatio), vagina (cunnilingus), and anus (anilingus). Oral sex involves using the mouth to stimulate the genitals or genital area of a sex partner.