People in at least 14 states caught a nasty stain of E. coli from tainted onions used in McDonald's Quarter Pounders, though the immediate danger has likely now passed.

While the Food and Drug Administration said Wednesday that the E. coli outbreak linked to McDonald’s “does not appear to be a continued food safety concern,” diners are stil

A deadly E. coli outbreak connected to slivered onions served in McDonald's Quarter Pounder hamburgers across the country has sickened at least 104 people, federal health officials said.