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Vaccine guidance from Mayo Clinic

HPV vaccine

Human papillomavirus (HPV) is a virus spread mainly by skin-to skin contact. HPV infection is often spread through sexual contact. HPV infections can cause warts and many kinds of cancer.

The HPV vaccine can prevent cancer of the cervix, vagina and vulva. The vaccine can also prevent genital warts, and cancers of the anus, penis and back of the throat. The HPV vaccine can protect against more than 90% of cancers caused by HPV.

The ACIP recommends routine HPV vaccination for kids ages 11 and 12. Kids and teens can get the HPV vaccine as early as age 9 or at ages 13 and 14. Two doses of the vaccine are given at least six months apart. It's ideal for people to get the vaccine before they have sexual contact and get exposed to HPV. Research has shown that receiving the vaccine at a young age isn't linked to an earlier start of sexual activity.

Once someone is infected with HPV, the vaccine might not be as effective or might not work at all. Also, response to the vaccine is better at younger ages than older ones.

Teens and young adults who begin the vaccine series later, at ages 15 through 26, should get three doses of the vaccine.