CDC researchers found that the rate of human papillomavirus presence among young women dropped by 89% between 2003 to 2006 and 2011 to 2014, eight years after HPV vaccine introduction, among those who received the vaccine, and by 34% among those who were unvaccinated. The findings in The Journal of Infectious Diseases also showed that the quadrivalent HPV vaccine was 83% effective. Click here for full article.