E. coli food poisoning linked to McDonald's Quarter Pounder hamburgers has sickened at least 49 people in 10 states, including one person who died and 10 who were hospitalized, Tuesday.
The death was reported in an older person in Colorado, and one child was hospitalized with severe kidney complications, the U.S. Centers for Disease Control and Prevention reported.
Infections were reported between Sept. 27 and Oct. 11, in Colorado, Iowa, Kansas, Missouri, Montana, Nebraska, Oregon, Utah, Wisconsin and Wyoming. Colorado has the most cases, 26, followed by Nebraska with nine.
Everyone interviewed in connection with the outbreak reported eating at McDonald's before falling ill and most mentioned eating Quarter Pounder hamburgers, the CDC said.
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The U.S. Agriculture Department, the Food and Drug Administration and state health officials also areÌýinvestigating.
The sign outside a McDonald's restaurant is seenÌýJune 25, 2019, in Pittsburgh.
A specific ingredient has not been identified as the cause, but investigators are focused on onions and beef. A preliminary FDA investigation suggests slivered onions served on the burgers are a likely source of contamination. The USDA is investigating the hamburger patties.
In a statement, McDonald's officials said initial findings suggest some illnesses are linked to onions sourced from a single supplier. The company halted distribution of the slivered onions and temporarily removed the Quarter Pounder from menus in the affected states, and also in portions of Idaho, Nevada, New Mexico and Oklahoma.
“We take food safety extremely seriously and it's the right thing to do,†the statement said.
are harbored in the guts of animals and found in the environment. Infections can cause severe illness, including fever, stomach cramps and bloody diarrhea.
People who develop symptoms of E. coli poisoning should seek health care immediately and tell the provider what they ate.
The news comes in an already tough year for the Chicago-based chain.
Its global same-store sales in nearly four years in the second quarter as inflation-weary customers skipped eating out or chose cheaper options. The company responded with a $5 meal deal, which was introduced at U.S. restaurants in late June and was recently . The deal doesn't include the Quarter Pounder.
McDonald's shares dropped 9% in after-hours trading Tuesday after the CDC's announcement.
The type of bacteria implicated in this outbreak, E. coli O157:H7, causes about 74,000 infections in the U.S. each year, leading to more than 2,000 hospitalizations and 61 deaths. Infections are especially dangerous for children younger than 5 and can cause acute kidney failure.
States Most Impacted by Food Recalls in Recent Years
Where are the recalls?
Photo Credit: New Africa / Shutterstock
Potato salad with foreign plastic. Mixed greens with listeria exposure. Ice cream with metal fragments. Cookies with undeclared nut allergens. Dried pasta with mold contamination.
These are just a few examples ofÌýissued by the U.S. federal government.
Food recalls frequently generate headlines and public concern because of their associated safety risks and health hazards. To help protect consumers, government officials have developed a system of regulation and oversight that identifies potentially unsafe products and issues recalls that get those products off of store shelves and out of consumers’ homes.
This system of oversight is aÌýof the U.S. Food and Drug Administration and the U.S. Dept. of Agriculture. Each agency is authorized by law to oversee certain types of farms and food production facilities, with sometimes overlapping jurisdiction. As the agencies identify hazardous products, they can issue recalls to minimize risks to consumers.Both the USDAÌýand the FDAÌýdistinguish between Class I, Class II, and Class III food recalls to signify the level of risk associated with each. While the two agencies’ systems are slightly different, the general classifications used are similar. Class I recalls are for the most hazardous products, which have higher risks of causing serious adverse health consequences or death, while Class II recalls have more moderate risks and Class III recalls have minimal risks.
Common Causes of Food Recalls
Allergen contamination is responsible for the largest share of recalls
Source: Trace One analysis of 2020–2024 FDA data
The leading causes of food recalls are allergen, bacterial, and foreign object contamination. Allergen contamination, responsible for nearly 40% of all cases, occurs when products are exposed to allergens like wheat, dairy, and nuts, often due to cross-contamination during manufacturing. Even trace amounts can trigger severe allergic reactions in sensitive individuals, making prevention and accurate labeling crucial.
Bacterial contamination follows at 21.1%, with recalls for pathogens like salmonella, E. coli, and listeria. These bacteria can cause serious illness, particularly in vulnerable populations such as young children, the elderly, and those with weakened immune systems. Infections can lead to severe gastrointestinal distress, long-term health complications, and even death.
Foreign object contamination accounts for 11.6% of recalls and includes materials such as rocks, insects, plastic, or metal. These contaminants can cause physical harm, such as choking, dental damage, or internal injuries if ingested.
The least common but highly concerning are lead contamination recalls, comprising just 1.7% of the total, yet attracting significant public attention due to their severe health risks. Recent high-profile lead recalls include , which garnered extensive media coverage due to the potential harm to vulnerable populations.
Food Recalls by State
Nearly 40% of all recalls impact customers in California & 16% originate from its producers
Source: Trace One analysis of 2020–2024 FDA and USDA data
Recalls are a nationwide concern, but some states are more vulnerable than others. California is the nation’s largest producer of food, and as such, the state is also responsible for the largest share of all recalls. More than 16% of recalls originate from California products, more than double the share of the next-closest state. And as the nation’s most populous state and a large market for food, California customers are also most frequently affected by recalls. Nearly 40% of all recalls nationally impact residents in California, with residents in other large states like New York, Pennsylvania, Illinois, and Texas following close behind.
The analysis was conducted by , a company specializing in regulatory compliance for the food and beverage industry, using data from the USDA and FDA. For a complete breakdown of data by state, see the original post: .
Methodology
Photo Credit: New Africa / Shutterstock
Data sources include the USDA’s Ìýdatabase as well as the FDA’s Ìýdatabase. To calculate which states have been most impacted by food recalls in recent years, Trace One combined data on recall events from both sources for the years 2020–2024. Each recall event was categorized based on its classification, reason for recall, location(s) impacted, and producer location. Recall events that were listed as national in scope were added to the totals of each state. Due to the unstructured nature of the datasets, a combination of natural language processing and manual techniques were used to categorize recalls. As such, small discrepancies between the counts presented in this analysis and other published reports are likely present. Additionally, estimates pertaining to producer locations are based on FDA data only, which account for over 90% of total recall events.
For complete results, see on Trace One.
Trends in U.S. Food Recalls
The total number of food recalls increased by 20% between 2020 and 2023
Source: Trace One analysis of 2020–2024 FDA and USDA data
Over the past few years, the number of food recalls issued by the two agencies has increased. From 2020 to 2023, the total number of recalls grew from 454 to 547, an increase of more than 20%. This growth took place across all classes of recall, but notably the number of Class I recalls has increased in each year since 2020. And through the first half of 2024, the number of total recalls is set to roughly match 2023’s total.
