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 September 17, 2025:
Salmonella Lomalinda (Reference #1339): This is a new Salmonella outbreak that has not yet been linked to a specific product. The FDA has not yet begun traceback, inspection, or sampling yet. So far, there are 30 cases of infection.
Listeria monocytogenes (Reference #1334): This is a new Listeria outbreak that has not yet been linked to a specific product. The FDA has not yet begun traceback, inspection, or sampling yet. So far, there are 8 cases of infection.
Salmonella Enteritidis (Reference #1329): This Salmonella outbreak has not yet been linked to a specific product. So far, there are 40 cases of infection. The FDA has initiated traceback investigation, sampling, and inspection.
Cyclospora cayetanensis (Reference #1325): This Cyclospora outbreak has not yet been linked to a specific product. There are currently 67 cases of infection. The FDA has initiated traceback investigation, sampling, and inspection.
Cyclospora cayetanensis (Reference #1313): This outbreak has not yet been linked to a specific product. There are currently 47 cases of infection. The FDA has initiated traceback investigation, sampling, and inspection.
Other Active Investigations
The FDA is managing multiple active outbreak investigations as of September 17, 2025:
Salmonella Oranienburg (Reference #1328): This outbreak has not yet been linked to a specific product. The FDA has initiated traceback, inspection, and sampling. There are currently 5 cases of infection.
Salmonella Anatum (Reference #1312): This outbreak has 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.
Salmonella Oranienburg (Reference #1311): This investigation has linked 4 illnesses and one (1) hospitalization to contaminated pistachio cream. The FDA is conducting traceback and sampling activities.
Listeria monocytogenes (Reference #1309): This Listeria outbreak has not been linked to a specific product. The FDA has only started traceback investigation. So far, there are 25 cases of infection.
Salmonella Enteritidis (Reference #1301): Posted April 23, 2025, this investigation was previously closed and now appears to have been reopened. The outbreak has been linked to contaminated eggs distributed by Country Eggs, LLC and a recall has been issued. So far, there are 95 cases of infection and 18 hospitalizations across 14 states.
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.
Closed Investigations Since Last Update
Salmonella Oranienburg (Reference #1316): This outbreak was not linked to a specific product. The FDA only initiated traceback investigation. There were 25 cases of infection.
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.
