​A CDC Food Safety Alert regarding an outbreak of E. coli infections linked to McDonald’s Quarter Pounders has been posted at https://www.cdc.gov/ecoli/outbreaks/e-coli-O157.html A CDC Food Safety Alert regarding an outbreak of E. coli infections linked to McDonald’s Quarter Pounders has been posted at https://www.cdc.gov/ecoli/outbreaks/e-coli-O157.html