An E. coli outbreak tied to McDonald's Quarter Pounder hamburger has left one person dead and dozens sick across 10 US states. The fast food chain has now taken the burger off the menu in affected areas.

Nearly 50 people have become ill and one person has died, amid infections that may have been caused by slivered onions, the C.D.C. reported.

One person died and dozens fell ill from E. coli infections linked to McDonald's Quarter Pounder hamburgers in 10 US states, the US Centers for...

McDonald's has proactively removed the slivered onions and beef patties used for the Quarter Pounder hamburgers from stores in the affected states while the investigation continues

The US Centers for Disease Control and Prevention announced a food safety alert for E.Coli after one person was killed and ten others hospitalized after eating McDonald's Quarter Pounders. Nearly 50 others reported illnesses across ten states, with most cases in Colorado and Nebraska.

Oct. 22 (UPI) -- An E. coli outbreak linked to McDonald's Quarter Pounders has led to one death and 10 hospitalizations, the Centers for Disease Control and Prevention announced Tuesday, as the fast food chain pulled the iconic burgers from its restaurants in several states.

Shares of McDonald’s plummeted in extended trading on Tuesday after U.S. health authorities said they were investigating an E. coli outbreak possibly linked to the burger chain’s Quarter Pounder.

The fast food chain has pulled some of the burger’s ingredients across multiple states as officials try to pin down what specific ingredient is contaminated.