The prevalence of STDs among teenagers and young adults is estimated to be around 1 out of every 10,000. The most common STDs are HIV (7%), cytomegalovirus (6%), herpes simplex virus (4%), and gonorrhea (1%). The rate of sexual activity increases with age, with rates more for teens and young adults (1% to 6%) versus 5% to 11% in the general population (1% to 11%) and 1% to 19% in adolescents and young adults (1% to 17%). These numbers are also much lower for older adults; these prevalences are even lower for non-sterile teens and younger persons (e. 14% in males and 1% at risk of HIV). Overall, sex partners of teens or young adults should not be considered part of the current sexual and family planning legislation (S. 2002/27). Sexual abuse, in particular, is a major public health public health problem worldwide and is endemic to many states. STDs in adolescents and young adults are particularly severe for adolescents if the sexually transmitted infections do not take place at or before the age of 15 years (S. 2001/24).