McDonald’s onion supplier ignored sanitation protocols

Taylor Farms Colorado, Inc., a supplier of slivered onions to McDonald’s franchises in a dozen states, ignored its own sanitation and food safety protocols, according to an inspection report from the FDA. The redacted report (FDA Form 483) was made available to the public on the Marler Blog site.

The slivered yellow onions were implicated in an outbreak of E. coli O157:H7 infections that sickened 104 people; 34 of the victims were hospitalized and one person died.

Following a traceback investigation, the FDA conducted an intensive inspection of the Taylor Farms production facility and found multiple instances of inadequate or improper cleaning and sanitation procedures, some in contravention of the company’s own written directives.

The slivered onions processed in the Colorado facility were exposed to the environment from the initial peeling step all the way to the finished packaging step. These ready-to-eat items do not undergo a lethal treatment step for pathogens. They are used as a raw “topper” in McDonald’s Quarter Pounder hamburgers.

The company’s food safety plan listed Salmonella and Listeria as hazards that require a sanitation control. Yet, inspectors observed several areas in the production plant that could support pathogen growth on food contact surfaces, and the ambient temperature inside the production facility was favorable to the growth of pathogens such as Listeria.

For example, pooling water was present in the vicinity of a cutting area, and the area tested positive for Listeria, as did a number of non-food contact surface areas in the production rooms.

Although the company’s Environmental Monitoring plan specified corrective actions when an environmental pathogen was detected, monitoring records for 2023 and 2024 indicated that these requirements were not consistently followed. In addition, the verification methods used were not designed to determine the types of pathogens found on a surface.

Cleaning procedures also were unreliable. FDA investigators observed apparent biofilm and large amounts of food debris on numerous equipment surfaces AFTER the post-operation clean-ups were completed. Surfaces that were not visually clean and should have been marked as “Fail” during pre-operation inspection were marked as “Pass” instead.

Other deficiencies included:

  • Torn and damaged conveyor belts
  • Trapped water and food debris present in pitted areas of food contact surfaces
  • Food particles in crevices of the welds on production lines
  • Sanitizing disposable gloves rather than removing and replacing them
  • Missing cleanliness check documents
  • Improper storage of food contact utensils (eg., knives)
  • Incorrect concentration level for sanitizing solution
  • Sanitized surfaces not allowed to air-dry before put into use.

Taylor Farms’ Colorado facility has been inspected on four previous occasions, most recently in 2020.

The facility passed inspection each time, with no corrective actions indicated, according to information available on the FDA Inspection Database.

Either the previous inspections were superficial, or else something changed between 2020 and 2024.

After the infamous “Jack In The Box” E. coli O157:H7 outbreak in 1992-1993, Foodmaker Inc. (the restaurant chain’s parent company) overhauled its Quality Assurance programs and implemented more stringent requirements of its suppliers.

A company the size of McDonald’s has enormous clout with prospective suppliers. If it were to insist on adherence to effective cleaning, sanitation and quality assurance protocols, and were to enforce these requirements by reserving the right to conduct unannounced audits of its suppliers’ facilities, the quality and safety of McDonald’s own products would be enhanced.

The FDA’s food safety program is overworked and underfunded.

FDA is spending a large chunk of its resources (personnel, lab facilities, etc) in tracing the sources foodborne outbreaks and putting out fires.

Year by year, the number of production facilities the FDA oversees has grown, and the agency’s budget has not kept pace.

And with a new administration about to take office, chances are the situation will only get worse.


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Recalls and Alerts: October 24–26, 2024

Here is today’s list of food safety recalls, product withdrawals, allergy alerts and miscellaneous compliance issues. The live links will take you directly to the official recall notices and company news releases that contain detailed information for each recall and alert.

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Outbreak/Illness Investigations

DENMARK (Update): The Statens Serum Institut reports 22 confirmed cases of Salmonella Umbilo ST2014 in an international outbreak suspected to be linked to arugula lettuce.

USA (Update): CDC reports 75 confirmed cases, 22 hospitalizations, and one death in an E. coli O157:H7 outbreak linked to consumption of McDonald’s Quarter Pounder burgers. FDA is investigating slivered onions from Taylor Farms as a possible source of the contamination.

United States

Allergy Alert: Grand Central Bakery recalls U-Bake Pie Crust, U-Bake Apple Pie, U-Bake Marionberry Pie, and U-Bake Chicken Pot Pie products (expiration dates between 02/01/2025 and 04/20/2025) due to undeclared egg.

Food Safety Recall: Sprouts Farmers Market recalls Chicken Street Taco Meal Kit (UPC 205916813991; Best by Date 9/2/2024-11/7/2024) due to possible Listeria monocytogenes contamination.

Food Safety Recall: Acme Smoked Fish Corp. recalls Kirkland Signature Smoked Salmon (Lot #8512801270) due to possible Listeria monocytogenes contamination.

Food Safety Recall: Nutristore Foods recalls Nutristore Freeze Dried Deluxe Meat Variety #10 Cans (12-count) due to possible Listeria monocytogenes contamination in chicken provided by one of the company’s suppliers.

Public Health Alert: USDA-FSIS issues a public health alert for various meat and poultry products that were illegally imported from the Republic of the Union of Myanmar. Please refer to the official notice for a complete list of affected products.

Canada

Allergy Alert: Seoul Trading Corp. recalls Jinju brand Fish Cake (500g & 1 kg; UPC 8 801077 529805 & 8 801077 510308, respectively; Date codes 12.12.2025 and 04.23.2025) due to undeclared egg.

Food Safety Recall: Horizon Distributors Ltd (Dba Horizon Grocery + Wellness) recalls 365 Whole Foods Market brand Organic Homestyle Waffles (210g; Date codes OCT 01 2024 to OCT 11 2025; UPC 0 99482 43696 4) and 365 Whole Foods Market brand Organic Blueberry Waffles (210g; Date codes OCT 01 2024 to OCT 11 2025; UPC 0 99482 43697 1) due to possible Listeria monocytogenes contamination.

Food Safety Recall (Update): Multiple firms recall various brands of Ham in Jelly (Jelly Pork) due to Listeria monocytogenes contamination. Please refer to the recall notice for an updated list of affected products.

Food Safety Recall: Concord Sales recalls Haribo brand Tangfastics (Gummy Candies) (175g; Lot L3614001964877; Best before 2025/06/25; UPC 0 12035 93060 8) due to foreign matter contamination (pieces of wood).

United Kingdom and Ireland

Allergy Alert (Ireland): Manufacturer recalls WheyHey Katsu Chicken with Rice (300g; Best before 15.08.2025 and 08.11.2025) due to undeclared peanut.

Allergy Alert Update (UK): Several brands recall a number of spice products that contain mustard due to undeclared peanuts. Please refer to the recall notice for an updated list of affected products.

Allergy Alert (UK): Perkier Foods recalls Perkier Salted Caramel Dark Chocolate bar (3 x 37g multipack; Best before 08 October 2025) due to undeclared almonds.

Hong Kong and Singapore

No Alerts

Australia and New Zealand

Allergy Alert (New Zealand): My Food Bag Ltd recalls My Food Bag brand All The Flavour brand Dukkah (20g; Best before 01/11/2024, 21/11/2024, 17/12/2024, 10/01/2025) due to undeclared peanut.

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McDonald’s E. coli O157:H7 outbreak grows. Taylor Farms recalls slivered onions

The E. coli O157:H7 outbreak linked to consumption of McDonald’ Quarter Pounder hamburgers has spread to three more states.

The CDC reports that 75 outbreak cases have now been confirmed in 13 states. A second patient has developed hemolytic uremic syndrome (HUS). Twenty-two people have been hospitalized.

The death toll remains at one resident of Colorado.

Cases have now been reported in Colorado (26), Iowa (1), Kansas (1), Michigan (2), Missouri (4), Montana (13), Nebraska (11), New Mexico (5), Oregon (1), Utah (5), Washington (1), Wisconsin (1), and Wyoming (4).

Victims range in age from 13 to 88 years old, with a median age of 29 years. Sixty percent of the victims are male.

Of the 42 people interviewed, all 42 (100%) reported eating at McDonald’s, and 39 people reported eating a beef hamburger. Of 36 people who remembered the specific beef hamburger they ate at McDonald’s, 31 (86%) reported eating a Quarter Pounder hamburger. Some people in this outbreak reported traveling to other states before their illness started. At least three people ate at McDonald’s during their travel.

The USDA-FSIS is investigating whether beef patties supplied to McDonalds may be behind the outbreak.

Concurrently, the FDA is investigating whether slivered onions supplied by Taylor Farms is the source of the outbreak.

Although the investigation is still in progress, Taylor Farms has recalled some onions supplied to McDonald’s and to additional food service customers.

McDonald’s stores in Colorado, Kansas, Utah, Wyoming, and portions of Idaho, Iowa, Missouri, Montana, Nebraska, Nevada, New Mexico, and Oklahoma have temporarily stopped using Quarter Pounder slivered onions and beef patties.

  • Consumers who have already eaten at McDonald’s and have symptoms of E. coli infection should contact their health care provider to report their symptoms and receive care immediately.
  • McDonald’s stores in affected states have temporarily stopped using Quarter Pounder slivered onions and beef patties. Diced onions and other types of beef patties used at McDonald’s have not been implicated in this outbreak.
  • Food service customers should not eat, sell, or serve Taylor Farms recalled yellow onions and should follow FDA’s safe handling and cleaning advice and use extra care in cleaning and sanitizing any surfaces and containers that may have come in contact with recalled product to reduce the risk of cross-contamination. Customers should also ensure that they did not freeze recalled onions or foods containing recalled onions.

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Interested in learning more about food safety and the history of foodborne disease outbreaks and investigations?

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Chapter 6. Birth of a Pathogen

TAINTED is available in digital format from all major on-line retailers. Press the button to go directly to your preferred digital bookstore.