slivered

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.

McDonald's said in a statement that it "identified an alternate supplier" for about 900 restaurants that had "temporarily stopped serving Quarter Pounder burgers with slivered onions".

Most people reported eating a McDonald’s Quarter Pounder prior to becoming ill, and the Food and Drug Administration focused its investigation on the burger’s beef patties and slivered onions, according to the CDC.

Earlier, the US Food and Drug administration singled out the slivered onions in Quarter Pounders as another potential source of the outbreak.