The US Centers for Disease Control and Prevention issued a food safety alert Tuesday regarding an E. coli outbreak that it says is linked with McDonald’s Quarter Pounders.

Quarter Pounder hamburgers have been linked to an E. coli outbreak, the Centers for Disease Control and Prevention said in an alert on Tuesday.

The Centers for Disease Control and Prevention and other federal agencies are investigating an E. coli outbreak linked to McDonald’s Quarter Pounders, sending McDonald’s stock down nearly 9% in after-hours trading.

Health officials from the CDC have officially announced that McDonald's burgers have been tied to an E.Coli outbreak affecting at least 10 states - killing at least one individual, while 49 others have fallen ill,

McDonald’s fell in afterhours trading Tuesday after the Centers for Disease Control and Prevention said an E. coli outbreak linked to the McDonald’s quarter pounders burgers has led one death and 10 hospitalizations across

McDonalds Quarter Pounders have been linked to a multi-state E. coli outbreak that has killed at least one, according to the Centers for Disease Control and Prevention.

Several people across 10 states have been hospitalized with E. coli, with most of those telling health officials that they ate a Quarter Pounder before they became sick, the CDC said.

Federal officials say E. coli food poisoning linked to McDonald’s Quarter Pounder hamburgers has sickened at least 49 people in 10 states.

Ten people have been hospitalized and one older person in Colorado has died after E. coli infections linked to McDonald's Quarter Pounder hamburger in 10 states, the U.S. Centers for Disease Control said on Tuesday.

An outbreak of E. coli linked to McDonald’s Corp. Quarter Pounder burgers has killed one person and hospitalized 10 people in 10 states.