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

At least 104 people have been sickened, with 34 hospitalized, in an outbreak of E. coli food poisoning tied to onions served on McDonald’s Quarter Pounder hamburgers.

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