In the news

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CORE update as of February 15, 2023

The CORE list of outbreaks and adverse events has three active investigations. (1) Listeria monocytogenes in Enoki mushrooms ref 1127, from November 9, 2022; (2) Salmonella Typhimurium Alfalfa Sprouts ref 1137 from December 28, 2022; and new addition (3) Listeria monocytogenes in an unidentified product ref 1123 from February 15, 2023. The outbreak with reference 1123 involves 11 illnesses, 10 hospitalizations in 10 States. @ https://www.fda.gov/food/outbreaks-foodborne-illness/investigations-foodborne-illness-outbreaks?utm_medium=email&utm_source=govdelivery

 

The following is a list of outbreak and adverse event investigations primarily being managed by FDA’s CORE Response Teams.

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Le Fromage au Village brand le Cru du Clocher raw milk cheddar cheese recalled due to Listeria monocytogenes

The CFIA reported that Le Fromage au Village brand Le Cru du Clocher raw milk cheddar cheese was recalled from the Canadian marketplace due to possible Listeria monocytogenes contamination. The recalled products have been sold online in Ontario and Quebec and may have been distributed in other provinces and territories. The recall was triggered by findings by CFIA during its investigation into a foodborne illness outbreak. There have been reported illnesses that may be associated with consuming these products. Further lab testing is underway to confirm the link. @ https://recalls-rappels.canada.ca/en/alert-recall/fromage-au-village-brand-cru-du-clocher-raw-milk-cheddar-cheese-recalled-due-listeria?utm_source=gc-notify&utm_medium=email&utm_content=en&utm_campaign=hc-sc-rsa-22-23&

 

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Food Traceability Rule and its Impact on the Food Industry- Is the industry ready

In November 2022, the FDA published its Final Food Traceability Rule, Requirements for Additional Traceability Records for Certain Foods. The Rule requires companies that manufacture, process, pack, or hold foods listed on the Food Traceability List (FTL) to maintain detailed records on their supply chain and suppliers, including “Key Data Elements” (KDEs), about how those supplies handled and processed. Bob Ferguson published the results of a questionnaire on the new Traceability rule in Food Safety and its impact on food processors. They surveyed   ~100 companies in the US, Canada, and 13 other countries. 88% of US companies are aware of the new rules. However, less than 50% of international companies are aware of it. The top concerns are about application and enforcement and how the FDA will approach enforcement for products that appear to be covered under the FTL but are not precisely defined in the text of the Rule. Many questioned the type and intensity of enforcement being expected. Companies, especially small ones, are requesting help to comply. Another concern is getting further clarity on the steps required for compliance. Companies are concerned about the complexity of the programs and recordkeeping needed and important considerations on additional staffing and costs required to comply with the Traceability Rule. Only 5 % of processors said they had “no concerns” about the Rule. 87 % of companies said that a three-year compliance timeframe was reasonable, and 11 % were not sure. @ https://digitaledition.food-safety.com/february-march-2023/column-food-safety-insights/

Column-Food Safety Insights

We surveyed food processors in North America and internationally to get their thoughts on FDA’s new Traceability Rule and how it will impact their businesses.

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New peptide antibiotic Albicidin with bactericidal activity towards fluoroquinolone-resistant Gram-negative pathogens

A new publication describes a novel antibiotic, Albicidin, with bactericidal activity towards fluoroquinolone-resistant Gram-negative pathogens (Michalczyk, E., Hommernick, K., Behroz, I. et al. Molecular mechanism of topoisomerase poisoning by the peptide antibiotic Albicidin. Nat Catal 6, 52–67 (2023)). Albicidin employs a dual binding mechanism where one end of the molecule obstructs the crucial gyrase dimer interface while the other intercalates between the fragments of cleaved DNA substrate. Therefore, Albicidin efficiently locks DNA gyrase, preventing it from religating DNA and completing its catalytic cycle. Two additional structures of this trapped state were determined using synthetic Albicidin analogues, demonstrating improved solubility and activity against various gyrase variants and E. coli topoisomerase IV. The extraordinary promiscuity of the DNA-intercalating region of Albicidin and their excellent performance against fluoroquinolone-resistant bacteria holds great promise for the development of last-resort antibiotics.@ https://doi.org/10.1038/s41929-022-00904-1

Molecular mechanism of topoisomerase poisoning by the peptide antibiotic albicidin - Nature Catalysis

Albicidin is a peptide antibiotic that has shown great promise for inhibiting DNA topoisomerase of fluoroquinolone-resistant Gram-negative pathogens, but its mode of action is not fully clear. Now, cryoelectron microscopy structures of albicidin–gyrase complexes provide detailed insights into the mechanism of this natural product.