U.S. News & World Report - Federal officials have approved a new weapon against anal cancer. Merck's Gardasil can now be marketed as an anal cancer vaccine for men and women ages 9 to 26, U.S. Food and Drug Administration officials said Wednesday. Clinical data suggest the vaccine, originally approved to prevent cervical, vulvar, and vaginal cancer caused by the human papillomavirus, could also be 78 percent effective in preventing anal cancer associated with four strains of HPV. Both men and women are affected by the disease, but the incidence is highest among men who have sex with men. ...
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