A new study came out today that says, half of men in the general population may be infected with human papillomavirus or HPV. The study shows that half of men can transmit it to women, or their male partners, depending on your sexual orientation. CDC recommends Gardasil vaccinations for girls and women between the ages of 11 and 26. Gardasil had sales of more than $1 billion last year. In December, the U.S. Food and Drug Administration approved Merck’s Gardasil HPV vaccine for prevention of anal cancers in both men and women.