Brooks believes resistance to vaccination stems from a couple of factors, one being the difficulty in explaining to people how the vaccine works. "It's a conceptually difficult thing for people to recognize -- that a virus causes a cancer," he said. "That's a major, major issue."
Parents also have been reluctant to have their adolescent girls and boys receive a vaccine against a sexually transmitted disease, said Dr. Jill Rabin, head of urogynecology at Long Island Jewish Medical Center in New Hyde Park, N.Y.
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"This is the tack that I take with patients and with families: the reason we give it to younger women is that they will build up the best antibody response," Rabin said. "It's not that we're giving it now because we expect them to have sex in their teenage years. We're giving it because they will make the best antibody response so when they do become sexually active, they will have protection at that point.
"If you give it to a 26 year old, they aren't going to mount as good an antibody response as someone who is 11 or 12 years old," she continued. "You're going to be giving better protection if you give it younger. It's not permission for them to go out and have intercourse."
Doctors also play a role in the failure to achieve widespread HPV vaccination, Frieden added.
"Providers are not consistently giving strong recommendations for the vaccine, and they are not encouraging vaccination at every encounter," he said.
Frieden said the vaccine has a safe track record, with no serious long-term complications associated with it even though more than 56 million doses have been distributed in the United States.
"The time has come to ramp up our efforts to vaccinate the next generation against cancer," he concluded. "This is an anti-cancer vaccine."
For a helpful Q & A on the HPV vaccine, head to the American Cancer Society.
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