The Centers for Disease Control and Prevention has released the results of a study on sex and teens. One in four girls had a sexually transmitted disease. Of sexually transmitted diseases, the human papillomavirus (HPV) tops the list. HPV is linked to cervical cancer.
Public health officials said a large number of young people have unprotected sex, many with multiple partners. In a 2007 study by the D.C. public school system, 60 percent of high schoolers and 30 percent of middle schoolers reported having sex. Twenty percent of the high school students said they had had sex with four or more people, and 12 percent of the middle schoolers said they had had three or more partners.