Additionally, condom use is uncommon during hai, with some studies indicating that condom use during hai is less common than condom use during vaginal sex (13, 14). It is important to characterize the groups with higher prevalence of this behavior, and, among those who are engaging in this behavior, what appears to influence condom use, in order to better tailor prevention messages. Pip this study examined condom use among those practicing anal intercourse. 814 clients attending anonymously for pretest counseling for hiv infection at the burnett clinic, auckland, new zealand, provided detailed information concerning their sexual behavior. Among heterosexuals reported rates of condom use are nearly universally lower for anal than for vaginal intercourse. This review examines anal sex among the general population, including its prevalence in various world regions, related sociocultural factors, and other associated health problems including anorectal stds, hepatitis b infection, and hpv-related anal cancer in women. Anal and oral sex are common sexual practices among heterosexuals, and the prevalence of these behaviors tends to increase with age. 1 a 2002 to 2003 united states (us) national probability survey found that more than 75 of men and women had ever engaged in oral sex, and half of all adolescents had received oral sex. 2 a more recent analysis using 2009 to 2010 nhanes data found a slightly. condom use at last anal or oral sex (fellatio only) was relatively uncommon in the us general population however, it was significantly higher for anal sex than oral sex. Six percent of men and women used a condom at last oral sex, compared with 25 and 16 who used a condom at last anal sex, respectively ( tables 1 and 2 ). anal sex is currently a hot topic of discussion for it is increasingly prevalent among young men and women, and older adults. 1 in 2007, a study based on the national survey of family growth (nsfg), found that one-third of u. 2 in the study, starting from the age 15, the percentage of participants reporting heterosexual anal sex. Condom use at last vaginal sex than those who did not practice ai (45. Having more lifetime part-ners, sex the same day as meeting a partner, and ever exchang-ing sex for money was signicantly more common among those who had ever practiced ai (table 1). This has potentially led to the misconception that uai is safe and may have driven lower condom use during ai among heterosexuals 911. Previous modelling studies also suggest that even a small fraction of uai could not only influence hiv spread but also reduce the potential impact of specific interventions such as topical vaginal microbicide (vmb) 2 , 4 , 8 , 12. Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a persons anus, or anus and rectum, for sexual pleasure. Other forms of anal sex include fingering, the use of sex toys for anal penetration, oral sex performed on the anus (), and pegging. Although anal sex most commonly means penileanal penetration, sources sometimes use anal intercourse to. Although anal sex and vaginal sex both often involve insertion, a transgender woman is, as is true of all people, never required to engage in any sex act at any time.