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Food Safety Incidents

Shigatoxin-Producing Escherichia Coli O157:H7 has been detected in Slivered onions.

November 29 2025

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Food Safety Alert: Detection of Bio-contaminants in Slivered Onions

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Food Safety Alert: Detection of Bio-contaminants in Slivered Onions

On November 19, 2025, a significant food safety incident was reported involving the detection of Shigatoxin-Producing Escherichia Coli O157:H7 in slivered onions. This bio-contaminant poses serious health risks to consumers, as it can lead to severe gastrointestinal illness.

The incident originated in the United States of America and has raised concerns among food safety authorities. Shigatoxin-Producing E. coli is known for causing foodborne illnesses, which can result in symptoms such as abdominal cramps, diarrhea (often bloody), and vomiting. In some cases, it can lead to more severe complications, particularly in vulnerable populations such as young children, the elderly, and individuals with weakened immune systems.

Consumers are advised to exercise caution when handling and consuming slivered onions. It is crucial to ensure that any onions purchased are sourced from reputable suppliers and to follow proper food handling and cooking practices to minimize the risk of contamination.

Authorities are actively investigating the source of the contamination and are taking necessary measures to prevent further incidents. For the latest updates and guidance, consumers should refer to local health departments and food safety organizations.

Stay informed and prioritize food safety to protect yourself and your loved ones from potential health hazards.


  • Incident: Shigatoxin-Producing Escherichia Coli O157:H7 has been detected in Slivered onions.
  • Date: 2025-11-19
  • Product: Slivered onions
  • Market: Available to SGS Digicomply users only. Explore the platform (for enterprises, no individual plans)
  • Origin of issue: United States of America
  • Hazard: Available to SGS Digicomply users only. Explore the platform (for enterprises, no individual plans)
  • Incident Category: Other incident
  • Hazard Category: Bio-contaminants
  • Source: Centre for food safety - The Goverment of the Hong Kong Special Administrative Region

For more detailed information about this and other similar incidents, with access to filtering options, historical data, and trend analysis, try the SGS Digicomply Food Safety Software. Explore SGS Digicomply Food Safety Intelligence Hub demos here. (for enterprises only, no individual plans)

Tags: November 2025