Point of order, here:
It "causes" most cervical cancers, or "is linked to many" cervical cancers.
No, seriously, I'm asking.
I think this accurate. 100% of the cervical cancers show evidence of an HPV infection. Gardasil targets four strains of HPV, two of which are present in 70% of the cancer cases; the other two not having any known relationship to cancer. But, and this is an important factor, millions of people are infected with HPV at any given time, and most of them cure. Similar to influenza, lots of people "get it," and some people die of complications from having it. The risk of serious complications from influenza infection is greater than from HPV infection.