McDonald’s to Restore Quarter Pounders After E. Coli Scare (1)

McDonald’s Corp. says Quarter Pounders will return to menus at all restaurants this week after ruling out beef patties as the source of a multistate E. coli outbreak that has sickened dozens and left one person dead.

The fast food chain said it combined its supply chain tracing data with information from government bodies, including an analysis by the Colorado Department of Agriculture that found no E. coli in dozens of samples from multiple lots of the restaurant’s fresh and frozen beef patties.

The E. coli infections have been linked to McDonald’s Quarter Pounders and appear to stem from the ...