CNN's Elizabeth Cohen explains how E. coli affects the human body and how to stop you and your family from getting sick. <script type='text/javascript' src='http://z.cdn.turner.com/cnn/van/resources/scripts/van-widgets.js'></script> <div data-cnnvansinglewidget data-affiliate='gantdaily' data-videoid='health/2015/06/23/ecoli-dangers-explainer-elizabeth-cohen-orig.cnn' data-size='auto' data-autostart='true'></div>