Heterosexual anal intercourse and the risk of Aids and HIV for 16-20-year-olds

’LOWER bound ’ prevalence estimates for heterosex-ual anal intercourse, derived from a cohort-sequen-tial longitudinal survey study of a sample of 2,171 16-20 year-olds in the UK, are presented. A non-triv-ial number of people report past experience of het-erosexual anal intercourse and a willingness to have it in the future. Those who reported having had het-erosexual anal intercourse were more likely also to report having been younger when they first had va-ginal intercourse; having had more sexual partners; having current partners who had had other partners in the past and being less willing to use condoms in the future. THE heterosexual transmission of HIV has been es-tablished ’ and the dangers of heterosexual anal inter