E.coli linked to slivered onions on some McDonald's Quarter Pounder burgers in America has caused 104 people to become ill, according to US health officials.The US Food and Drug Administration (FDA) said in an update on Wednesday that 34 people had been hospitalised in connection to the outbreak and that one man had died in October.

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

A deadly E. coli outbreak connected to slivered onions served in McDonald's Quarter Pounder hamburgers across the country has sickened at least 104 people, federal health officials said.

At least 104 people have been sickened, with 34 hospitalized, in an outbreak of E. coli food poisoning tied to onions served on McDonald's Quarter Pounder hamburgers, federal health officials said Wednesday.

The CDC said epidemiological data showed that slivered onions served at McDonald’s were the likely source of the outbreak.

Health officials said the source of contamination was likely slivered onions served on Quarter Pounder burgers.

Fresh, slivered onions served on Quarter Pounders and other menu items from McDonald's are the likely source of E. coli outbreak in the United States.