Romaine Lettuce E Coli Outbreak 2024. Onions are likely the culprit in the mcdonald's e. The outbreak was associated with consuming romaine lettuce from salinas valley, ca.

Romaine lettuce served on burgers and sandwiches at wendy’s was one of the most common ingredients eaten among the menu items, but investigators continue to analyze data at the. Coli outbreak that sickened at least.