A quarter pounder hamburger is served at a McDonald's restaurant on March 30, 2017 in Effingham, Illinois.Photo by Scott Olson/Photographer: Scott Olson/Getty

McDonald’s quarter pounders linked to deadly E. coli outbreak, CDC says

True number of people infected is likely much higher than is currently known and may involve additional states

by · National Post

A severe E. coli outbreak tied to onions served with McDonald’s quarter pounders sickened dozens of people in the US, mainly in Colorado and Nebraska, and killed one, the U.S. Centers for Disease Control and Prevention said.

Ten people have been hospitalized, including a child with complications from HUS, a syndrome that damages small blood vessels and can lead to deadly clots, the agency said. Of the people who have been interviewed, all reported eating at McDonald’s before falling ill between Sept. 27 and Oct. 11, the CDC said, with most specifying a quarter pounder.