HPV vaccine prevents cervical cancer and other cancers by fending off the virus that causes them. But it's been a tough sell with doctors and parents. Joe Raedle/Getty Images hide caption

toggle caption Joe Raedle/Getty Images

Dr. Donald Brown inoculated Kelly Kent with the HPV vaccine in his Chicago office in the summer of 2006 — not long after the first version of the vaccine reached the market. Charles Rex Arbogast/AP hide caption

toggle caption Charles Rex Arbogast/AP

Convenience may be one reason why most teens haven't gotten all three HPV shots. VCU CNS/Flickr hide caption

toggle caption VCU CNS/Flickr

Parents And Teens Aren't Up To Speed On HPV Risks, Doctors Say

  • Download
  • <iframe src="https://www.npr.org/player/embed/279609708/279709523" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

University of Miami pediatrician Judith Schaechter gives a girl an HPV vaccination in 2011. Joe Raedle/Getty Images hide caption

toggle caption Joe Raedle/Getty Images

A 13-year-old girl gets an HPV vaccination at the University of Miami in 2011. The vaccine protects against the human papillomavirus, which can cause cervical cancer. Joe Raedle/Getty Images hide caption

toggle caption Joe Raedle/Getty Images

Vaccines against the HPV virus are already used to prevent cervical and anal cancer. Harry Cabluck/AP hide caption

toggle caption Harry Cabluck/AP

A 13-year-old girl gets an HPV vaccination from Judith Schaechter, a pediatrician at the University of Miami, in 2011. Joe Raedle/Getty Images hide caption

toggle caption Joe Raedle/Getty Images

Vaccine Against HPV Has Cut Infections In Teenage Girls

  • Download
  • <iframe src="https://www.npr.org/player/embed/193478716/193584789" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Lauren Fant winces as she receives her third and final shot of HPV vaccine from nurse Stephanie Pearson in Marietta, Ga., in 2007. John Amis/AP hide caption

toggle caption John Amis/AP

An 18-year-old girl winces as she has her third and final shot of the HPV vaccine. John Amis/AP hide caption

toggle caption John Amis/AP

Connor Perruccello-McClellan, a senior at Providence Country Day School in Rhode Island, has been vaccinated against HPV, something less than 1 percent of U.S. males can say. Richard Knox/NPR hide caption

toggle caption Richard Knox/NPR