What we know about the McDonald’s E. coli outbreak investigation - CNN

What we know about the McDonald’s E. coli outbreak investigation  CNNE. coli Outbreak Linked to McDonald’s Quarter Pounders  CDCMcDonald's takes Quarter Pounder off the menu at 1 in 5 restaurants due to E. coli outbreak  CBS NewsColoradan who died from E. coli infection linked to McDonald’s food was Mesa County resident  Colorado Public RadioMcDonald's provides update on E. coli breakout as shares drop amid scandal  Yahoo Financ