Attitudes of adolescent/young adult women toward human papillomavirus vaccination and clinical trials.

Human papillomavirus (HPV) is the most common sexually transmitted infection. It often inflicts adolescents and young adults shortly after onset of sexual activity. More than 30 types of HPV infect the anogenital area; some HPV types cause cervical cancer in women decades after infection, whereas other types cause genital warts in both men and women within a year after infection.