Core update as of March 25, 2026

The CORE update lists five outbreak and adverse event postings. The Core table of active investigations includes 5 activities. Following the outbreak of E. coli O157:H7 (ref #1369) linked to raw cheddar cheese, the FDA has updated the advisory and initiated a sample collection. The FDA and CDC, in collaboration with state and local partners, are investigating a multistate outbreak of E. coli O157:H7 infections linked to RAW FARM-brand raw dairy products. FDA’s investigation is ongoing. A total of nine people infected with the outbreak strain of E. coli have been reported from three  states. Illnesses started on dates ranging from September 1, 2025, to February 20, 2026. Three people have been hospitalized , and one  person developed hemolytic uremic syndrome (HUS). WGS analysis of E. coli isolates from ill people shows that they are all genetically closely related. The outbreak of Salmonella Newport (ref #1366), linked to an unidentified product, has increased the case count from 60 to 67. The outbreak of Salmonella Saintpaul (ref #1353) linked to mangoes, the Executive incident summary abstract claims that the traceback investigation identified common mango importer, identification of the exact source was not possible due to the absence of brand information or detailed product information on shopper records, comingling of product lots in shipments, and lack of lot code traceability both within production facilities and from distribution centers to retail locations. Based on a strong epidemiologic association and traceback convergence, this outbreak was confirmed to be linked to mango. This outbreak resulted in 56 cases reported. This outbreak investigation was moved to the Closed 2025 Table.  @ https://www.fda.gov/food/outbreaks-foodborne-illness/investigations-foodborne-illness-outbreaks?utm_medium=email&utm_source=govdelivery

 

 

 Investigations of Foodborne Illness Outbreaks
Investigations of Foodborne Illness Outbreaks

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

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