McDonald's to start selling Quarter Pounders again due to E. coli test results

• McDonald's pulls Quarter Pounders at 1 in 5 locations due to E. coli

  Top stories - CBS News - October 23
• 

  E. Coli Outbreak Linked to McDonald’s Quarter Pounders

  Business - The New York Times - October 23

• McDonald's Quarter Pounders at center of E. coli outbreak

  Top stories - CBS News - October 23

• McDonald's says tests have ruled out beef patties as the source of the E. coli outbreak tied to Quarter Pounders

  Health - ABC News - October 27
• 

  McDonald’s Quarter Pounder back on the menu after testing rules out beef patties as E. coli source

  Health - ABC News - October 27

• McDonald's Quarter Pounders linked to deadly E. coli outbreak, CDC says

  Top stories - CBS News - October 22
• 

  McDonald's Quarter Pounders linked to deadly E. coli outbreak

  Top stories - NBC News - October 23
• 

  CDC investigates deadly E. coli outbreak tied to McDonald's Quarter Pounders

  Top stories - NBC News - October 23

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