Actor Michael Douglas has drawn people's attention to oral sex as a cause of cancer in a recent newspaper interview. Human papillomaviruses, also known as HPVs are a group of more than 150 related viruses. Most can be easily spread through direct skin-to-skin contact during vaginal, anal, and oral sex. It is understood HPV-16 is primarily responsible for oral cancer cases. <br /><br />This double-stranded DNA virus infects the epithelial cells in all areas covered by skin and mucosa such as the mouth, throat, tongue, tonsils, vagina, penis, and anus.<br /><br />This animation explains how the HPV virus infects the human body.<br /><br />--------------------------------------------------------<br /><br />TomoNews is your daily source for top animated news. We've combined animation and video footage with a snarky personality to bring you the biggest and best stories from around the world. <br /><br />For news that's fun and never boring, visit our channel:<br />https://www.youtube.com/user/TomoNewsUS<br /><br />Subscribe to stay updated on all the top stories:<br />http://www.youtube.com/subscription_center?add_user=TomoNewsUS<br /><br />Stay connected with us here:<br />Facebook http://www.facebook.com/TomoNewsUS<br />Twitter @tomonewsus http://www.twitter.com/TomoNewsUS<br />Google+ http://gplus.to/TomoNewsUS
