http://www.nytimes.com/2007/02/17/he...mp;oref=slogin
Gardasil protects against two strains of H.P.V. that cause about 70 percent of the cases of cervical cancer as well as two other strains that cause genital warts. In approving the vaccine last June, the Food and Drug Administration said that in the United States each year there were an average of 9,710 new cases of cervical cancer and 3,700 deaths attributed to it.