slivered

Fresh, slivered onions at McDonald’s were the likely source of the outbreak, the CDC said, in line with previous reports.

The recent releases come after McDonald’s said it plans to invest $100 million in hopes of bringing back customers following an E. coli outbreak linked to slivered onions on the Quarter Pounder hamburgers.

McDonald’s also announced that recent tests showed no E. coli in its food, and its Quarter Pounder burgers topped with slivered onions are now back on menus nationwide.

In October, more than 100 McDonald’s customers were sickened by an E. coli outbreak in the U.S. linked to slivered onions.

The E. coli cases linked to carrots comes after another high-profile outbreak in the US, related to slivered onions on some McDonald's Quarter Pounder burgers.