McDonald's is investing $100 million to bring customers back to stores after an outbreak of E. coli food poisoning tied to onions on the fast-food giant's Quarter Pounder hamburgers. The investments include $65 million that will go directly to the hardest-hit franchises,

Of that, $65 million will go to the McDonald’s franchises hit the hardest. McDonald’s is investing $100 million to bring customers back to stores after an outbreak of E. coli food poisoning tied to onions on the fast-food giant’s Quarter Pounder hamburgers.