The number of cases has risen from 49 reported earlier, with three additional states now affected.

Of those impacted, 22 people have been hospitalized, and two have developed severe complications potentially leading to kidney failure. The outbreak is believed to be linked to fresh onions served on the Quarter Pounders, sourced from Taylor Farms, a California-based supplier. U.S. Foods, a major distributor, announced on Thursday that Taylor Farms issued a recall for onions over possible E. coli contamination.

The CDC reported that consumers likely contracted the illness between September 27 and October 10, though officials caution the number of cases could be higher, as not all affected individuals seek medical treatment. Additionally, more cases may surface as investigations continue.

In response, McDonald's announced it was temporarily pulling the Quarter Pounder from the menu in affected regions. “We are working in close partnership with our suppliers to replenish supply for the Quarter Pounder in the coming weeks,” stated Cesar Piña, North America Chief Supply Chain Officer. Piña also confirmed that other menu items, including the Cheeseburger, Big Mac, and McDouble, remain unaffected and available.

McDonald’s stock was down 2.7% on Friday afternoon following news of the outbreak. (ILKHA)