[quote=Brian Hill]HPV has officially displaced tobacco today as the number one cause of oral cancers... "Scientists say that 64 percent of cancers of the oral cavity, head, and neck in the U.S. are caused by human papillomavirus (HPV), which is commonly spread via oral sex." ...
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I'm a bit confused by these stats.

If the approximate number of OC cases/year in the U.S. are 37K, then are we saying HPV+ cases now comprise about 24K of those?

Another recent article link from Charm (by Dr. William Lydiatt, at the University of Nebraska Medical Center) stated the HPV+ cases are approximately 15K /yr (up from 10K a decade ago). http://www.omaha.com/article/20110226/LIVEWELL01/702269904/1161

Numbers don't seem to add up, or am I missing something?!