The current study did not assess motivations for practicing anal intercourse, such as to maintain virginity or to avoid pregnancy. We relied on self-reports of sexual behavior and substance use, behaviors that are private and socially stigmatized. Therefore, reductions in unprotected anal intercourse could have a significant impact on individuals who practice this behavior and a small impact on hiv epidemics. Is an indicator of the amount by which anal intercourse increased participants’ risk of hiv acquisition.
Factors that affect transmission
For example, research has shown that 43% of female sex workers [. Given the transmission efficiency of anal intercourse, even a low prevalence of anal sex among heterosexuals could account for a large number of hiv infections [. Increase the rectal fluid viral load among a small group of people with hiv on art.