Vaccine helps protect against more HPV strains

September 21, 2007

New data show that a vaccine against the virus that causes cervical cancer partially blocks infection by 10 strains of the virus on top of the four types the vaccine targets. That boosts protection — at least partially — to 90 percent of strains causing the deadly cancer, according to data presented at a medical conference by Merck & Co., maker of Gardasil. (CNN)