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People Top 5
LAST UPDATE: Sunday December 21, 2014 04:10AM EST
PEOPLE Top 5 are the most-viewed stories on the site over the past three days, updated every 60 minutes
- October 24, 2005
- Vol. 64
- No. 17
A Vaccine for Cancer?
Good News: a New Shot May Protect Women from Most Cervical Cancers
A: Cervical cancer—which kills some 3,700 American women a year—is caused by human papillomavirus (HPV), an extremely common sexually transmitted infection. The vaccine blocks the two types of HPV that most often develop into cancer.
Q: Will it work for all women?
A: The vaccine, which may get FDA approval by late 2006, could be helpful for any female who is or plans to be sexually active. The three-shot series may also prevent hard-to-treat genital warts.
Q: When is the best time to be vaccinated?
A: Optimally, before becoming sexually active—even in adolescence—since 80 percent of women will in time be infected with HPV. Although most show no symptoms and develop a natural immunity, some 10,400 women a year are diagnosed with cervical cancer.
Q: What if I have already been infected with HPV?
A: The vaccine will not reverse infections you already have, but it may stop new ones, says Dr. Eliav Barr, who heads the vaccine research for Merck & Co.
Q: How long does the shot last?
A: Unclear. In tests, women remained protected for 3½ years. Scientists will follow up to see if a booster is needed.
Q: Does this mean the end of Pap smears?
A: No. Strains of HPV that this vaccine does not prevent still account for 30 percent of cervical cancers, so women will need to get screened at least once every three years.
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