The United States has the highest STD rate of any industrialized country, according to the CDC and WHO. Half of all young Americans will get a sexually transmitted disease by the age of 25, perhaps because they are ignorant about protection or embarrassed to ask for it. According to reports, 9 million new cases of STDs among teens and young adults aged 15 to 24 were reported in 2000. Three diseases--human papillomavirus or genital wart virus, a parasitic infection called trichomoniasis and chlamydia--accounted for 88 percent of all new cases of STDs in 15- to 24-year-olds. Wart virus is the major cause of cervical cancer while chlamydia can cause infertility.
Yahoo! News February 24, 2004