McDonald's CEO addresses E. coli outbreak on earnings call: 'We are certainly very sorry' USA TODAYColo. Teen, 15, Battling Kidney Failure After Reportedly Eating McDonald’s Quarter Pounders amid E. Coli Outbreak PEOPLEMcDonald's executives say E. coli outbreak is 'behind us' CNBCMcDonald’s Sales Slump After E. Coli Outbreak Spooks Diners Bloomberg