An E. coli outbreak linked to McDonald’s Quarter Pounders has killed one person and hospitalized 10, according to an announcement Tuesday from the U.S. Centers for Disease Control. Forty-nine cases have been identified in 10 states, mostly in Colorado and Nebraska, dating from Sept. 27 to Oct. 11.

E. coli food poisoning linked to McDonald’s Quarter Pounder hamburgers has sickened at least 49 people in 10 states, including one person who died and 10 who were hospitalized, federal health officials said Tuesday.