The strain of E. coli in the outbreak produces a toxin that can cause severe, life threatening complications. © Richard T.

The number of people that fell ill from an E. coli outbreak linked to raw onions on McDonald's Quarter Pounders has topped ...

Illnesses linked to slivered onions on McDonald's Quarter Pounder burgers expand to 14 states, federal officials say.

Fourteen new illnesses linked to the McDonald's E. coli outbreak were reported by the CDC and FDA Wednesday, bringing the ...

The source of the outbreak was likely slivered onions on McDonald's Quarter Pounder burgers, health officials have said.

At least 104 people have been sickened, with 34 hospitalized, in an outbreak of E. coli food poisoning tied to onions served ...

The number of E. coli cases in the McDonald's outbreak tied to slivered onions in the popular Quarter Pounder has gone up to ...

Federal health officials said the E. coli outbreak linked to slivered onions on McDonald’s Quarter Pounders is no longer a safety concern. At least 104 people have been infected, the U.S. Food and ...

The number of illnesses in the E. coli outbreak linked to McDonald’s Quarter Pounders has risen to 104, up from 90 at last ...

Of those who have fallen ill, 34 were hospitalized; four people developed HUS, a condition that causes kidney failure; and ...

A deadly E. coli outbreak connected to slivered onions served in McDonald's Quarter Pounder hamburgers across the country has ...

A deadly E. coli outbreak linked to McDonald’s has now sickened over 100 people, the CDC says. Here's what to know.