<p>McDonald is  working to reassure customers that its restaurants are safe  after E-coli outbreak</p><p>quater pounders are now off the  menus  at 1/5 of McDonald  from  Oklahoma to Idao.</p><p>CDC says E-coli linked to quater pounder got at least   49 people sick in 10 states. one person died </p><p>A preliminary FDA investigation suggests fresh slivered onion served raw on quarter pound hambergers are  likely  the source of the contamination</p><p>McDoland said its's searching for new regional suppliers for fresh onions </p><p> </p><p>I'm Ed  Donahu</p>
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