page_title: HPV vaccine
section_title: Medical uses
hierarchical_section_title: HPV vaccine / Medical uses
caption_attribution_description: 日本語: HPVワクチン「ガーダシル」2016年日本にて撮影 English: HPV-vaccine " Gardasil"　2016 JAPAN
context_page_description: Human papillomavirus vaccines are vaccines that prevent infection by certain types of human papillomavirus. Available vaccines protect against either two, four, or nine types of HPV. All vaccines protect against at least HPV types 16 and 18, which cause the greatest risk of cervical cancer. It is estimated that the vaccines may prevent 70% of cervical cancer, 80% of anal cancer, 60% of vaginal cancer, 40% of vulvar cancer and possibly some mouth cancer. They additionally prevent some genital warts, with the quadrivalent and nonavalent vaccines that protect against HPV types HPV-6 and HPV-11 providing greater protection.
  The World Health Organization recommends HPV vaccines as part of routine vaccinations in all countries, along with other prevention measures. The vaccines require two or three doses depending on a person's age and immune status. Vaccinating girls around the ages of nine to thirteen is typically recommended. The vaccines provide protection for at least 5 to 10 years. Cervical cancer screening is still required following vaccination. Vaccinating a large portion of the population may also benefit the unvaccinated.
context_section_description: HPV vaccines are used to prevent HPV infection and therefore cervical cancer. Good evidence supports that vaccination of large percentage of people within a population decreases rates of HPV infections with part of the benefit from herd immunity. Some types are recommended in the United States for women and men who are 9–26 years of age, and are approved for those who are 27–45 years of age.
  Since the vaccines only cover some high-risk types of HPV, cervical cancer screening is recommended even after vaccination. In the U.S., the recommendation is for women to receive routine Pap smears beginning at age 21.
caption: Syringe
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