Articles Tagged with ''leafy greens''

This episode of Food Safety Five discusses a new study that leverages a novel quantitative microbial risk assessment (QMRA) model that suggests that half of E. coli O157:H7 illnesses linked to romaine lettuce are caused by contamination via untreated overhead irrigation water.

England saw a 26 percent rise in Shiga toxin-producing Escherichia coli (STEC) infections from 2023 to 2024, and non-O157 STEC cases tripled since 2019. These trends may be driven by one foodborne illness outbreak involving contaminated salad leaves.

Using a newly developed quantitative microbial risk assessment (QMRA) model, researchers have identified interventions along the U.S. romaine lettuce supply chain that would most effectively reduce E. coli contamination. The QMRA is publicly available for use.

According to internal FDA and CDC reports uncovered by NBC News and attorney Bill Marler, in November 2024, a multistate Escherichia coli outbreak linked to lettuce sickened 89 people, resulting in 36 hospitalizations and one death. Mention of the outbreak was not made public until the investigation was closed, nor were any details shared openly.

This article discusses the quantification of risk associated with changes in enterohemorrhagic E. coli (EHEC) physiology during post-harvest pre-processing of leafy greens.

After Fruit Logistica 2025, Marzio Cazzamali, Global Industry Segment Manager for Fruit and Vegetables at Ammeraal Beltech, shared his reflections on the event, focusing on innovations in food-safe conveyor solutions. 

Funded by the Center for Produce Safety, researchers with the University of Barcelona and the Spanish Research Council are developing novel testing protocols for norovirus and hepatitis A on berries and leafy greens, enabling faster analysis and reducing false positives. 

A recent report from the FAO/WHO Joint Expert Meeting on Microbiological Risk Assessment (JEMRA) summarizes the development of formal risk assessment models for Listeria monocytogenes in leafy greens, cantaloupe, frozen vegetables, and ready-to-eat (RTE) seafood.

A new study led by USDA-ARS and Oklahoma State University showed that oregano and cinnamon essential oils can be reused multiple times to effectively wash organic leafy greens contaminated with E. coli without losing antimicrobial activity. 

Development of a new microbiological risk assessment model, led by researchers from the University of Illinois Urbana-Champaign, could help the produce industry determine the best risk management strategies for a diverse range of production scenarios.