Category Archives: E.coli O157:H7

USA – FDA – Investigations of Foodborne Illness Outbreaks

FDA

What’s New

  • A new outbreak of Salmonella Typhimurium (ref #1277) linked to a not yet identified product has been added to the table. FDA has initiated traceback.
  • For the outbreak of E. coli O157:H7 (ref #1269) linked to a not yet identified product, the case count has increased from 21 to 25 cases.
  • For the outbreak of E. coli O121:H19 (ref #1273) linked to organic whole and baby carrots supplied by Grimmway Farms, FDA has updated the outbreak advisory. FDA has also initiated an onsite inspection and sample collection.
  • For the outbreak of E. coli O26:H11 (ref #1272) linked to a not yet identified product, the outbreak has ended.

USA – Investigations of Foodborne Illness Outbreaks

FDA

What’s New

  • For the outbreak of E. coli O157:H7 (ref #1269) linked to a not yet identified product, the case count has increased from 18 to 21 cases.
  • For the outbreak of E. coli O121:H19 (ref #1273) linked to organic whole and baby carrots supplied by Grimmway Farms, FDA has issued an advisory. Grimmway Farms has initiated a voluntary recall of several sizes and brands of bagged, organic whole and baby carrots. See the outbreak advisory for additional information.
  • For the outbreak of Salmonella Liverpool (ref #1265) linked to a not yet identified product, the outbreak has ended.
  • For the investigation of illnesses (ref #1233) linked to Diamond Shruumz-brand Chocolate Bars, Cones, and Gummies, the advisory was updated on November 15, 2024. CORE’s investigation is complete, and the agency is now focused on post-incident actions and activities.

FSIS – USDA -Wolverine Packing Co. Recalls Ground Beef Products Due to Possible E. Coli O157:H7 Contamination

FSIS USDA

Wolverine Packing Co., a Detroit, Mich. establishment, is recalling approximately 167,277 pounds of ground beef products that may be contaminated with E. coli O157:H7, the U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) announced today.

The fresh products have a “use by” date of 11/14/2024 and the frozen products are labeled with production date 10 22 24. View full product listView labels.

The products subject to recall bear establishment number “EST. 2574B” inside the USDA mark of inspection. These items were shipped to restaurant locations nationwide.

The problem was discovered when FSIS was notified by the Minnesota Department of Agriculture of a group of ill persons who had reported that they consumed ground beef prior to their illness.

FSIS was notified of illnesses on November 13, 2024, and working in conjunction with Minnesota Departments of Agriculture and Health, FSIS determined that there was a link between the ground beef products from Wolverine Packing Co. and this illness cluster. On November 20, 2024, a ground beef sample collected by the Minnesota Department of Agriculture as part of an outbreak investigation tested positive for E. coli O157. To date, 15 case-patients have been identified in one state with illness onset dates ranging from November 2, 2024, to November 10, 2024. FSIS continues to work with the Minnesota Departments of Agriculture and Health on this investigation.

Anyone concerned about an illness should contact a healthcare provider. E. coli O157:H7 is a potentially deadly bacterium that can cause dehydration, bloody diarrhea and abdominal cramps 2–8 days (3–4 days, on average) after exposure the organism. While most people recover within a week, some develop a type of kidney failure called hemolytic uremic syndrome (HUS). This condition can occur among persons of any age but is most common in children under 5-years old and older adults. It is marked by easy bruising, pallor, and decreased urine output. Persons who experience these symptoms should seek emergency medical care immediately.

FSIS is concerned that some product may be in restaurant refrigerators or freezers. Restaurants are urged not to serve these products. These products should be thrown away or returned to the place of purchase.

FSIS routinely conducts recall effectiveness checks to verify recalling firms notify their customers of the recall and that steps are taken to make certain that the product is no longer available to consumers.

FSIS advises all consumers to safely prepare their raw meat products, including fresh and frozen, and only consume ground beef that has been cooked to a temperature of 160 F. The only way to confirm that ground beef is cooked to a temperature high enough to kill harmful bacteria is to use a food thermometer that measures internal temperature, https://www.fsis.usda.gov/safetempchart.

Consumers and members of the media with questions about the recall can contact Don Tanner, company representative at 248-762-1533.

Consumers with food safety questions can call the toll-free USDA Meat and Poultry Hotline at 888-MPHotline (888-674-6854) or send a question via email to MPHotline@usda.gov. For consumers that need to report a problem with a meat, poultry, or egg product, the online Electronic Consumer Complaint Monitoring System can be accessed 24 hours a day at https://foodcomplaint.fsis.usda.gov/eCCF/.

Product Images

Research – WHAT YOU NEED TO KNOW ABOUT THE E. COLI O157:H7 BACTERIA DURING AN OUTBREAK

Food Poison Journal

E. coli is an archetypal commensal bacterial species that lives in mammalian intestines. E. coli O157:H7 is one of thousands of serotypes Escherichia coli.[1] The combination of letters and numbers in the name of the E. coli O157:H7 refers to the specific antigens (proteins which provoke an antibody response) found on the body and tail or flagellum[2]respectively and distinguish it from other types of E. coli.[3] Most serotypes of E. coli are harmless and live as normal flora in the intestines of healthy humans and animals.[4] The E. coli bacterium is among the most extensively studied microorganism.[5] The testing done to distinguish E. coli O157:H7 from its other E. coli counterparts is called serotyping.[6]

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USA – Guacamole link in PCC E. coli Outbreak

Marler Blog

Seattle-King County Public Health (Public Health) investigated an outbreak of Shiga toxin-producing E. coli O157:H7 (STEC) in the spring of 2024. This outbreak was associated with PCC Community Markets.

USA – Saint Louis County Department of Public Health Continues to Investigate E. coli O157 Outbreak as Cases Climb

Food Poison Journal

The Saint Louis County Department of Public Health (DPH) is continuing to actively investigate an outbreak of Escherichia coli O157 (E. coli) affecting students, parents and guests of Rockwood Summit High School. As of 12:30 this afternoon, 69 cases have been identified, with some laboratory-confirmed and others presenting compatible symptoms and epidemiological links to confirmed cases.

Further investigation has revealed that individuals who tested positive for E. coli attended two separate events hosted at or catered through Andre’s Banquets and Catering in association with Rockwood Summit High School. Although current details are suggestive of salad being the source of illness, we have not identified a specific ingredient, nor do we have information on the nature or timing of the contamination (i.e., farm vs. later).

Research – Cold Plasma and Pulsed Light Inactivates Escherichia coli O157: H7 in Romaine Lettuce and Preserves Produce Quality

Wiley Online

ABSTRACT

Fresh produce safety is important for consumer health. Intervention technologies that can lessen the pathogen threat and produce contamination is needed. In this research, cold plasma (CP), pulsed light (PL) and their combinations were assessed for inactivating Escherichia coli O157:H7 on Romaine lettuce. The effects of treatment on native microflora and sensory attributes of lettuce was also determined. An inoculum of multiple E. coli O157:H7 strains was employed for this study. Lettuce leaves were spot inoculated and then treated with PL (1–60 s), CP (15–60 s) or their optimized treatment combinations. A 30 s treatment with PL (fluence dose of 31.5 J/cm2), was optimum which provided 2.7 log CFU/g reduction of the pathogen, while 45 s treatment of CP was optimum, that delivered 2.1 log CFU/g log reduction. Combinations of PL and CP treatments were investigated for enhanced inactivation. For PL-CP combination, inoculated lettuce was treated with PL for 30 s followed by 45 s of CP exposure. While for CP-PL combination, treatments sequences were 45 s of CP treatment followed by 30 s PL treatment. Both combination treatments, PL-CP and CP-PL, resulted in synergistic inactivation of E. coli cells with > 5 log reductions of the pathogen. These combination treatments significantly (p < 0.05) reduced native microbiota and slowed their growth during storage. Additionally, treatment effects on lettuce quality was not adversely impacted. PL and CP are both non-aqueous, sustainable technologies. This study demonstrated that integration of PL and CP technology can enhance microbial safety and preserve quality of Romaine lettuce.

USA – FDA – Investigations of Foodborne Illness Outbreaks

FDA

The CORE Outbreak Investigation Table is a list of outbreak and adverse event investigations primarily being managed by FDA’s CORE Response Teams. The investigations are in a variety of stages, meaning that some outbreaks have limited information, and others may be near completion. The table will be updated weekly.

This week’s updates are:

  • A new outbreak of E. coli O157:H7 (ref #1269) linked to a not yet identified product has been added to the table. FDA has initiated traceback.
  • For the outbreak of E. coli O121:H19 (ref #1273) linked to a not yet identified product, the case count was adjusted from 33 to 37 cases.
  • For the outbreak of E. coli O157:H7 (ref #1270) linked to onions, FDA updated the outbreak advisory.
  • For the outbreak of Salmonella Thompson (ref #1262) linked to a not yet identified product, the outbreak has ended.
  • For the outbreak of E. coli O157:H7 (ref #1249) linked to a not yet identified product, the outbreak has ended.
  • For the outbreak of Listeria monocytogenes (ref #1247), FDA’s investigation has closed.
  • For the outbreak of Cyclospora cayetanensis (ref #1245), FDA’s investigation has closed. CDC, FDA, and state and local partners conducted epidemiologic and traceback investigations and identified shrimp salad, made with fresh produce ingredients, as the source of illnesses in this outbreak. FDA collected and analyzed product and ingredient samples as part of the investigation, but all samples were reported as negative for Cyclospora. Due to the lack of additional supporting evidence, investigators were unable to determine a specific ingredient as the source of contamination while the outbreak was considered ongoing. All product is past shelf life and is no longer on the market. There is no ongoing risk to public health.
  • For the outbreak of Cyclospora cayetanensis (ref #1237), FDA’s investigation has closed and the case count has adjusted to 49. CDC, FDA, and state and local partners conducted epidemiologic and traceback investigations and identified imported parsley as the source of illnesses in this outbreak. FDA initiated on-site inspections and collected and analyzed product and ingredient samples as part of the investigation, but all samples were reported as negative for Cyclospora. Due to the lack of additional supporting evidence, investigators were unable to determine a specific source of contamination while the outbreak was considered ongoing. All product is past shelf life and is no longer on the market. There is no ongoing risk to public health.
  • For the outbreak of Salmonella Typhimurium (ref #1234), FDA’s investigation has closed. CDC, FDA, and state and local partners conducted epidemiologic and traceback investigations and identified jalapeno pepper as the source of illnesses in this outbreak. FDA collected and analyzed product samples as part of the investigation, but all samples were reported as negative for Salmonella. Additionally, once investigators had enough information to confirm jalapenos as the source of this outbreak, the products were past their shelf life and no longer available for sale. This outbreak is over and there is no risk to consumers.

USA- FDA- Update – Outbreak Investigation of E. coli O157:H7: Onions (October 2024)

FDA

November 13, 2024

FDA, CDC, and state partners continue investigating a multistate outbreak of E. coli O157:H7 linked to slivered onions served on Quarter Pounder burgers at McDonald’s restaurants in certain states. As of November 13, 2024, 104 people infected with the outbreak strain of E. coli O157:H7 have been reported from 14 states. Of 98 people with information available, 34 have been hospitalized, and 4 people developed HUS, a serious condition that can cause kidney failure. One death has been reported from an older adult in Colorado. This person is not one of those who developed HUS. Of the 81 people interviewed, 80 (99%) report eating at McDonald’s. Seventy-five people were able to remember specific menu items they ate at McDonald’s. 63 of 75 people (84%) reported a menu item containing fresh slivered onions.

FDA, Colorado Department of Agriculture (CDA), and Colorado Department of Public Health and Environment (CDPHE) have collected onion and environmental samples from McDonald’s stores, distribution centers, and firms of interest for laboratory analysis. At this time, one FDA sample of recalled onions has tested positive for E. coli, but it is a non-O157:H7 Shiga toxin-producing E. coli (STEC) and does not match the outbreak strain or any other clinical illnesses. Whole genome sequencing (WGS) analysis determined that the sample is positive for E. coli O168:H8 and contains the Shiga toxin gene stx2a. Additional sample results are pending. More information will be provided in this update as it becomes available.

FDA has completed onsite inspections at a Taylor Farms processing center in Colorado and an onion grower of interest in Washington state.

McDonald’s stopped using slivered onions on Quarter Pounder burgers in affected states, and Taylor Farms recalled yellow onions on October 22, 2024. Food service customers were notified by Taylor Farms that they should not sell or serve recalled yellow onions. FDA continues working with Taylor Farms and their direct customers to determine if additional downstream customer recalls are necessary. Food service customers should not be further distributing recalled onions. According to available information, recalled onions should not be available for purchase in grocery stores. McDonald’s has reintroduced slivered onions from a different onion supplier into their full menu. At this time, there does not appear to be a continued food safety concern related to this outbreak at McDonald’s restaurants.

USA -How disease detectives’ quick work traced deadly E. coli outbreak to McDonald’s Quarter Pounders

6ABC

Scientists at the US Centers for Disease Control and Prevention who worked with the Colorado Department of Public Health and Environment to investigate the latest E. coli outbreak and nail down its cause say the fact that these cases were linked and solved so quickly makes it a noteworthy win.

As part of an outbreak investigation announced by the CDC and the US Food and Drug Administration on October 22, 90 cases of STEC infection from 13 states have been linked to McDonald’s Quarter Pounders. More than two dozen people have been hospitalized, and one has died.

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