Zachary Lystedt Law

In 2009 there was a law passed in Washington State called the Zachary Lystedt Law (sometimes called the shake-it-off law).  Since that time all 50 states have adopted similar legislation.  It came about after Zachary Lystedt sustained a head injury while playing in a football game.

To read more information:

https://www.cdc.gov

http://www.seattlemag.com