Overview
The FDA’s CORE Response Teams manage multiple outbreak and adverse event investigations at various stages of completion. These investigations range from those with limited initial information to cases nearing resolution. Healthcare providers and public health officials encourage individuals experiencing potential foodborne illness symptoms to report details about food consumption prior to becoming ill, as this information assists in resolving active and emerging outbreaks.
The FDA issues public health advisories when investigations produce specific actions consumers can take for protection. These advisories contain the most current investigation details and consumer safety information.
Some investigations may not identify a definitive source or contributing factors. Adverse event investigations depend on self-reported data. While reports may reference specific products, the FDA lists only product categories in public documentation until sufficient evidence exists to implicate a particular product as the cause of illness or adverse events. When causes or contributing factors are identified that could inform prevention strategies, the FDA provides summary findings.
Recent Updates
Five investigations have received updates as of August 6, 2025:
Salmonella Oranienburg (Reference #1316): This outbreak has not yet been linked to a specific product. The FDA has only initiated traceback investigation so far. There are currently 2 new cases of infections, for a total of 24 identified so far.
Cyclospora cayetanensis (Reference #1313): This outbreak has not yet been linked to a specific product. There are currently 61 cases of infection, up 4 from those initially reported. The FDA has initiated traceback investigation and sampling.
Salmonella Anatum (Reference #1312): This outbreak has now been linked to Sprouted Beans. Chetak LLC Group has issued a recall. An advisory has also been posted in Hindi. The FDA has initiated sampling and an onsite inspection.
Listeria monocytogenes (Reference #1305): Posted April 30, 2025, this investigation connects ready-to-eat foods from Fresh & Ready Foods LLC to illness cases. The FDA said the outbreak has now ended and their investigation is over. Ultimately, the outbreak resulted in 10 total illnesses, 10 hospitalizations, and one (1) death.
Salmonella Enteritidis (Reference #1301): Posted April 23, 2025, this investigation has now been closed and was not linked to a specific product. A total of 34 infections were reported.
Other Active Investigations
The FDA is managing multiple active outbreak investigations as of August 6, 2025:
Salmonella Oranienburg (Reference #1311): Posted June 1311, this investigation has linked 4 illnesses and one (1) hospitalization to contaminated pistachio cream. The FDA is conducting traceback and sampling activities.
E. coli O145:H28 (Reference #1303): Posted May 14, 2025, this investigation involves 11 cases connected to an unidentified product. The outbreak status is listed as ended, and the FDA has conducted traceback, inspection, and sampling activities. An investigation is still open.
Listeria monocytogenes (Reference #1290): Posted April 9, 2025, this ongoing investigation involves 17 cases linked to chicken fettuccine alfredo meals and is conducted jointly with USDA (reference 2025-05). The FDA has initiated traceback, inspection, and sampling activities. To date, 17 illnesses, 16 hospitalizations, and 3 deaths have been reported.
Investigation Process
These investigations represent various stages of the FDA’s food safety response process. Some investigations result in product recalls, while others involve traceback efforts to identify contamination sources. The FDA conducts inspections and sampling as part of the investigative process when warranted. Joint investigations with USDA occur when cases fall under both agencies’ jurisdictions.
