A new CDC study estimates that one in four (26 percent) young women between the ages of 14 and 19 in the United States — or 3.2 million teenage girls — is infected with at least one of the most common sexually transmitted diseases (human papillomavirus (HPV), chlamydia, herpes simplex virus, and trichomoniasis).

The two most common STDs overall were human papillomavirus, or HPV (18 percent), and chlamydia (4 percent). Data were based on an analysis of the 2003-2004 National Health and Nutrition Examination Survey.

For the full article, please refer to http://www.sciencedaily.com/releases/2008/03/080312084645.htm