Testing rules out beef patties as the source of E. coli outbreak, McDonald’s says

• 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 Pounder beef patties not the source of E. coli outbreak, company says

  Top stories - NBC News - October 27
• 

  McDonald's Quarter Pounder beef patties not linked to E. coli outbreak, company says

  Top stories - ABC News - October 27

• McDonald's beef patties test negative for E. coli in Colorado

  Top stories - CBS News - October 27
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  No E. Coli Found in Samples of McDonald’s Beef Patties, Officials Say

  Health - The New York Times - October 28
• 

  McDonald’s says beef patties not responsible for E. Coli illnesses

  Top stories - NBC News - October 27
• 

  Quarter Pounders Return to McDonald’s Menus After Beef is Ruled Out as E. Coli Source

  Business - Inc. - October 28

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