McDonald’s tries to reassure customers after deadly E. coli outbreak NPRE. coli Outbreak Linked to McDonald’s Quarter Pounders CDCMcDonald’s E. coli outbreak stops Quarter Pounder sales at fifth of restaurants AxiosHere are Wednesday’s biggest analyst calls: Apple, McDonald’s, Tesla, Costco, Microsoft, Carvana, Uber and more CNBCMcDonald’s E. Coli Outbreak Adds to Burger Giant’s Sales Headache The Wall Street Journal