Closed Captioning ON OFF apply | reset x Text Display Background Enhancements font Times New Roman Arial Comic Sans size T T T T color share link January 1st, 2013 Dr. Nancy Snyderman: Flu season will worsen in 2013 NBC chief medical editor Nancy Snyderman predicts the biggest medical stories of 2013, from a bad flu season and the royal birth to human genome testing. More video Sponsored Content Now Playing UGG boots are most-searched holiday gift online Sponsored Content Now Playing 5 must-see cities to travel to in 2013 Sponsored Content Now Playing Previewing top tech gear and gadgets of the new year Sponsored Content Now Playing Where to travel in 2013: Miami, Croatia, and more TRENDING Now Playing Can you tell who's the mom and who's the daughters? Now Playing Catch up on the biggest stories of the week with The Download Now Playing Ryan Reynolds reveals his baby daughter was named after his late father Now Playing Drew Barrymore: Trying to be hot constantly Is 'exhausting' LIFESTYLE Now Playing Watch Craig Melvin blush during 'Would You Rather' game Now Playing What product can Dylan Dreyer not live without? Now Playing It'll take more than a plastic spider to scare Meredith Vieira Now Playing Meredith Vieira is back on TODAY (but her voice isn't) Most Watched Now Playing Sponsored Content Can you tell which way this bus is traveling? Now Playing Sponsored Content Somalia plane explosion 'likely' caused by bomb; explosive residue found Now Playing Sponsored Content Security forces unite in force for Super Bowl 50 Now Playing Sponsored Content Catch up on the biggest stories of the week with The Download Now Playing Sponsored Content Virginia Tech students 'carefully planned' killing of 13-year-old, police say Now Playing Sponsored Content Deadly 6.4-magnitude earthquake strikes Taiwan Now Playing Sponsored Content Can you tell who's the mom and who's the daughters?