US: McDonald's removes Quarter Pounders from one-fifth of its stores post E. coli outbreak

Its head of US operations Joe Erlinger said it's likely that whatever product was contaminated has already passed through the company's supply chain

Update: 2024-10-24 03:56 GMT
McDonald's has more than 14,000 US stores and serves 1 million Quarter Pounders every two weeks in the affected area. Representational image

McDonald's worked on Wednesday (October 23) to reassure customers that its US restaurants are safe as federal investigators tried to pinpoint the cause of a deadly E. coli outbreak linked to the fast-food giant's Quarter Pounder hamburgers.

McDonald's pulled Quarter Pounders from one-fifth of its US stores on Tuesday (October 22) as a result of the outbreak, which the US Centres for Disease Control and Prevention (CDC) said had sickened at least 49 people in 10 states. One person died and 10 were hospitalised, according to the CDC.

Fresh slivered onions likely source of contamination

A preliminary investigation by the US Food and Drug Administration suggested that fresh slivered onions that are served raw on Quarter Pounder hamburgers were a likely source of the contamination.

McDonald's said it was searching for a new regional supplier for fresh onions. In the meantime, Quarter Pounders were removed from menus in the impacted states as well as portions of other states.

Also Read: McDonald’s burgers linked to E. coli outbreak in US; one dead, 10 hospitalised

McDonald's said it has worked closely with federal food safety regulators since late last week, when it was alerted to the potential outbreak. The company said the scope of the problem and the popularity of its products have complicated efforts to identify the contamination source.

McDonald's has more than 14,000 US stores and serves 1 million Quarter Pounders every two weeks in the affected area.

‘Known for stringent food safety guidelines’

McDonald's is known for its stringent food safety guidelines and protocols, said Chris Gaulke, a professor of food and beverage management at Cornell University's Nolan School of Hotel Administration. The company said on Wednesday that the supplier regularly tested its onions for E. coli, for example.

“Given the volume of food that they go through, how infrequently this happens to McDonald's is a testament to the effort that they take,” Gaulke said.

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But some experts questioned why McDonald's simply stopped selling one sandwich and didn't close restaurants for further investigation.

“Good practice would have been to close all the restaurants," Bill Marler, a Seattle lawyer who specialises in food safety cases, said. “Until we know definitively what the product was that made people sick, consumers should be aware."

Marler said cross-contamination remains a potential possibility at the affected restaurants until they are thoroughly cleaned.

Why it didn’t close stores

Asked why it didn't close any stores, McDonald's said nothing in the government's investigation indicated there were issues with its food preparation practices. In an interview on the Today show on Wednesday, McDonald's US President Joe Erlinger also said it's likely that whatever product was contaminated has already passed through the company's supply chain.

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The Centres for Disease Control and Prevention reported the outbreak late Tuesday. It said infections were reported between September 27 and October 11 in Colorado, Iowa, Kansas, Missouri, Montana, Nebraska, Oregon, Utah, Wisconsin, and Wyoming.

State and local public health officials were interviewing people about the foods they ate in the week before they got sick. Of the 18 people interviewed as of Tuesday, all reported eating at McDonald's, and 16 people reported eating a beef hamburger. Twelve reported eating a Quarter Pounder.

Unlikely that beef was the source of infection: McDonald’s

McDonald's said it's unlikely the beef in the Quarter Pounder was the source, since it comes from multiple suppliers and is cooked at a high enough temperature to kill E. coli.

McDonald's said its initial findings suggest that some of the reported illnesses were linked to onions from a single supplier, which the company didn't name. McDonald's said the onions are cleaned and sliced by the supplier and then packaged for use on individual Quarter Pounders.

The incubation period for E. coli is only a couple of days, so illness would be quickly apparent to anyone affected, said Donald Schaffner, a food safety expert at Rutgers University.

“If you ate these burgers in September and now it's the middle of October and you didn't get sick, you're probably OK,” he said.

Symptoms of E. coli poisoning

E. coli bacteria are harboured in the guts of animals and found in the environment. Infections can cause severe illness, including fever, stomach cramps, and bloody diarrhoea. People who develop symptoms of E. coli poisoning should seek health care immediately and tell the provider what they ate.

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The type of bacteria implicated in the McDonald's food causes about 74,000 infections in the US annually, leading to more than 2,000 hospitalisations and 61 deaths each year, according to the CDC. In general, E. coli infections were lower in 2023 than in recent years and cases of severe kidney injury caused by the bacteria remained stable, according to latest federal data.

Outbreaks at restaurant chains are rare, but they do happen.

(With inputs from agencies)

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