Michigan, New Mexico and Washington have also been added to the list of states with reported illnesses
The onions from McDonald's E. coli outbreak that affected dozens and killed one across 10 states have a local connection.
A California-based produce company was the source of fresh onions linked to a deadly E. coli food poisoning outbreak at McDonald's.
The lawsuit was filed one day after the CDC issued a food safety alert warning that dozens of people reported eating the Quarter Pounder sandwich at McDonald's before becoming sick.
Most of the people who became ill reported eating McDonald's Quarter Pounder sandwiches, the CDC says.