"HPV (human papillomavirus) is a sexually transmitted virus. It is passed on through genital contact (such as vaginal and anal sex). It is also passed on by skin-to-skin contact. At least 50% of people who have had sex will have HPV at some time in their lives. HPV is not a new virus. But many people don't know about it. Most people don't have any signs. HPV may go away on its own-- without causing any health problems."