TL;DR: FDA's CORE teams are actively tracking 15 foodborne illness investigations, with the newest updates adding international distribution details for raw milk cheese and higher case counts for chicken wraps and Listeria clusters.

FDA's active outbreak list centers on 15 CORE investigations

The list of outbreak and adverse event investigations primarily being managed by FDA's CORE Response Teams covers investigations in a variety of stages, meaning that some have limited information, while others may be near completion, according to the Investigations of Foodborne Illness Outbreaks | FDA.

The agency notes that not all recalls and alerts result in an outbreak of foodborne illness and directs readers to check recent Food Recalls and Safety Alerts for that separate information.

A public health advisory will be issued for investigations that have resulted in specific, actionable steps for consumers to take to protect themselves, with the most up to date information on the investigation and consumer protection information on those pages.

Investigations that do not result in specific, actionable steps for consumers may or may not conclusively identify a source or reveal any contributing factors. Adverse event investigations rely on self-reported data. Although these reports may name a particular product, FDA will only indicate a product category in the table and will not publicly name a specific product until there is sufficient evidence to implicate that product as a cause of illnesses or adverse events. If a cause and/or contributing factors are identified that could inform future prevention, FDA commits to providing a summary of those findings.

What's new: cheese advisory update and rising case counts

For the outbreak of E. coli O26:H11 (ref #1419) linked to raw milk cheese, the outbreak advisory was updated on October 9, 2026, to include international distribution information. FDA has initiated sample collection for that investigation.

For the outbreak of Listeria monocytogenes (ref #1415), FDA has initiated sample collection.

For the outbreak of E. coli O157:H7 (ref #1421) linked to multi-ingredient chicken wraps, the case count has increased from 38 to 50.

For the outbreak of Listeria monocytogenes (ref #1417), the case count has increased from 44 to 46.

For the outbreak of Salmonella Bovismorbificans (ref #1411), FDA updated the outbreak advisory with downstream product recalls and sampling information.

For the outbreak of Cyclospora (ref #1392), the case count has been adjusted from 235 to 240.

For the outbreak of Salmonella Oranienburg (ref #1387), the outbreak has ended.

Three investigations were moved to the Closed 2026 Table with Executive Incident Summary Abstracts now accessible by clicking the reference number: Salmonella Enteritidis (ref #1378) linked to shell eggs, Salmonella Typhimurium, Newport, and Richmond (ref #1358) linked to moringa leaf powder, and Clostridium botulinum (ref #1383) linked to infant formula.

Ongoing investigations with advisories point to cheese, sprouts and peppers

The Active Investigations table lists five investigations with Ongoing See Advisory status where consumers are referred to detailed advisory pages.

Reference #1419, posted 9/25/2026, involves E. coli O26:H11 linked to Raw Milk Cheese, with total case count listed as See Advisory. Traceback, inspection and sampling have been initiated, and recall status is listed as See Advisory.

Reference #1411, posted 9/10/2026, involves Salmonella Bovismorbificans linked to Sprouts, with total case count listed as See Advisory. Traceback and sampling have been initiated, and recall status is listed as See Advisory.

Reference #1394, posted 8/19/2026, involves E. coli (multiple strains) and Salmonella Agona linked to Alfalfa Sprouts, with total case count listed as See Advisory. Traceback, inspection and sampling have been initiated, and recall status is listed as See Advisory.

The advisories for 2026 catalogued in Public Health Advisories from Investigations of Foodborne Illness Outbreaks | FDA include E. coli O26:H11: Raw Milk Cheese (September 2026), Salmonella: Sprouts (September 2026), E. coli and Salmonella: Sprouts (August 2026), and Salmonella: Jalapeño (August 2026).

Reference #1395, posted 7/22/2026, involves Salmonella Javiana linked to Jalapeño Peppers, with total case count listed as See Advisory. Traceback, inspection and sampling have been initiated, and recall status is listed as See Advisory. Its outbreak/event status is listed as Ended See Advisory, indicating the event portion is marked ended while the investigation remains active.

Reference #1390, posted 7/15/2026, involves Cyclospora linked to Iceberg Lettuce, with total case count listed as See Advisory. Traceback, inspection and sampling have been initiated, and recall status is listed as See Advisory. Its outbreak/event status is listed as Ended See Advisory.

Chicken wraps and three Listeria clusters remain without full resolution

Reference #1421 (USDA 2026-04), posted 9/23/2026, involves E. coli O157:H7 linked to multi-ingredient wrap with chicken described as suspect, with 50 cases. Traceback, inspection and sampling have been initiated. Its outbreak/event status is listed as Ongoing See Advice.

Three separate Listeria monocytogenes investigations list the linked product as Not Yet Identified and remain with Ongoing See Advice status.

Reference #1415, posted 9/30/2026, lists 11 cases, with traceback, inspection and sampling initiated.

Reference #1417, posted 9/23/2026, lists 46 cases, with traceback initiated.

Reference #1379, posted 7/22/2026, lists 11 cases, with traceback, inspection and sampling initiated.

The table instructs readers with Ongoing See Advice status to review general advice pages rather than a product-specific advisory. For people who think they have symptoms, FDA advises talking to a healthcare provider and public health officials and providing details of what was eaten before becoming sick, noting this often aids in helping solve emerging or ongoing outbreaks.

Large Salmonella Newport cluster and ended Cyclospora files

Reference #1403, posted 8/26/2026, involves Salmonella Newport with product Not Yet Identified and 116 cases. Traceback and sampling have been initiated. Its outbreak/event status is listed as Ongoing See Advice.

Reference #1402, posted 8/12/2026, involves Salmonella I 4,[5],12:i:- with product Not Yet Identified and 43 cases. Traceback, inspection and sampling have been initiated. Its outbreak/event status is listed as Ended See Advice.

Reference #1398, posted 8/5/2026, involves Cyclospora with product Not Yet Identified and 22 cases. Traceback and sampling have been initiated. Its outbreak/event status is listed as Ended See Advice.

Reference #1392, posted 7/22/2026, involves Cyclospora with product Not Yet Identified and 240 cases. Traceback and sampling have been initiated. Its outbreak/event status is listed as Ended See Advice.

Reference #1385, posted 7/8/2026, involves Cyclospora with product Not Yet Identified and 38 cases. Traceback and sampling have been initiated. Its outbreak/event status is listed as Ended See Advice.

Reference #1387, posted 7/8/2026, involves Salmonella Oranienburg with product Not Yet Identified and 99 cases. Traceback, inspection and sampling have been initiated. Its outbreak/event status is listed as Ended See Advice.

The distinction between Investigation Status and Outbreak/Event Status matters because FDA keeps some investigations active after the event is marked ended, allowing follow-up work such as traceback review or sampling to continue.

Closed 2026 investigations add public summaries

The What's New section identifies three investigations moved to the Closed 2026 Table where the Executive Incident Summary Abstract can now be accessed by clicking the reference number.

Reference #1378 involves Salmonella Enteritidis linked to shell eggs. Reference #1358 involves Salmonella Typhimurium, Newport, and Richmond linked to moringa leaf powder. Reference #1383 involves Clostridium botulinum linked to infant formula.

Those abstracts are post-response deliverables prepared after closure of investigations primarily managed by FDA's Coordinated Outbreak Response and Evaluation Response Teams, according to agency background on the abstracts program.

The broader advisory archive shows the range of 2026 topics that reached the advisory stage, including Salmonella: Eggs (July 2026), Cyclospora: Iceberg Lettuce (July 2026), E. coli: Frozen Blueberries (July 2026), Infant Botulism: Powdered Infant Formula (June 2026), Listeria monocytogenes: Soft Cheese (June 2026), Salmonella: Moringa Leaf Powder (May 2026), E. coli: Raw Cheddar Cheese (March 2026), Salmonella: Moringa Powder (February 2026), and Salmonella: Moringa Leaf Powder (January 2026).

What consumers should check next

Readers should direct attention to advisory pages for the most up to date information on any investigation with specific, actionable steps to protect themselves.

For sprouts, raw milk cheese, alfalfa sprouts, jalapeño peppers and iceberg lettuce files, the Active Investigations table uses See Advisory markers for case counts or recalls, meaning the advisory page rather than the table holds the detailed consumer information.

For files marked Ongoing See Advice or Ended See Advice without a named product, the table points to general advice and does not name a specific product for consumers to avoid. FDA states it will not publicly name a specific product until there is sufficient evidence to implicate that product.

Anyone with possible symptoms is advised to contact a healthcare provider and public health officials with details of foods eaten before becoming sick.