One of the arguments you hear most often by people who don't want to get immunized against influenza is that the flu just isn't a big deal; it's just a bad cold. It's not. There are lots of other things people often get wrong about flu shots, too. For those of you who want references or more information, go here: http://theincidentaleconomist.com/wordpress/?p=58721 John Green -- Executive Producer Stan Muller -- Director, Producer Aaron Carroll -- Writer Mark Olsen -- Graphics http://www.twitter.com/aaronecarroll http://www.twitter.com/crashcoursestan http://www.twitter.com/realjohngreen http://www.twitter.com/olsenvideo