Colorado teen fights kidney failure after eating McDonald’s Quarter Pounders The Associated PressAfter eating at McDonald’s, teen with E. coli battles kidney failure NBC NewsMcDonald’s sued by consumers in proposed class action over E.coli outbreak ReutersE. coli Outbreak Linked to McDonald’s Quarter Pounders | E. coli infection CDCMcDonald’s Sales Slump After E. Coli Outbreak Spooks Diners Bloomberg