A McDonald’s sandwich has been making people sick, according to the US Centers for Disease Control and Prevention (CDC).

According to the CDC, McDonald’s Quarter Pounder sandwiches have been found to contain E. coli, a type of bacteria that can make people seriously ill.

So far, the CDC has recorded 49 cases across 10 states. Ten cases resulted in patients being admitted to hospital and one person has died.

Most of the cases were recorded in western and mid-west states, according to the CDC.