Federal food safety investigators are tracking two new outbreaks that have sickened 65 people, and they have not yet identified the food behind either one. On Sept. 23, the Food and Drug Administration added a Listeria monocytogenes outbreak with 40 illnesses and an E. coli O157:H7 outbreak with 25 illnesses to its table of foodborne illness outbreak investigations. When FDA updated the table on Sept. 25, both case counts were unchanged and neither food had been named.
For most households, there is no product to pull from the refrigerator yet. The risk is not evenly shared, however. Listeria is especially dangerous during pregnancy and for adults 65 and older, while E. coli O157:H7 can lead to kidney failure in young children. For now, knowing the symptoms is the most useful step.
Two New Entries on FDA's Outbreak Table
The Listeria outbreak, listed as reference number 1417, shows 40 cases and a product listed as "Not Yet Identified." The E. coli O157:H7 outbreak, reference number 1421, shows 25 cases and is also listed without a product. FDA is investigating it together with the U.S. Department of Agriculture's Food Safety and Inspection Service, which tracks it under its own reference number, 2026-04.
For both outbreaks, FDA lists the investigation as active and the outbreak as ongoing. Traceback, the process of following suspected foods back through the supply chain, has begun. No recall, on-site inspection, or sample analysis has been listed.
Food Safety News reported that the FDA released no patient ages or locations for either outbreak. The Centers for Disease Control and Prevention has not posted a public notice for either one, so hospitalizations, deaths, and affected states have not been disclosed.
Why FDA Has Not Named a Food
FDA says its investigations "are in a variety of stages, meaning that some have limited information, while others may be near completion." The agency also says it "will not publicly name a specific product until there is sufficient evidence to implicate that product."
That caution protects against blaming the wrong food, but it also means a new entry on the table is an early signal rather than a consumer warning. Some investigations never confirm a source. FDA notes that investigations that do not produce "specific, actionable steps for consumers may or may not conclusively identify a source."
MedicalDaily has previously explained how FDA's outbreak investigation table works and why many outbreaks appear there weeks before any recall. The two new outbreaks are separate from an earlier Listeria outbreak with 10 cases, posted in July, and a Salmonella Newport outbreak that has grown to 116 illnesses. Both are still listed without a named food.
Pregnant Women and Older Adults Face the Greatest Listeria Danger
Listeria infection is uncommon but can be severe. The CDC says older adults face the highest risk, noting that "more than half of all Listeria infections occur among people 65 years and older" and that "1 in 6 older adults with this infection die." People with weakened immune systems, including those taking steroids or chemotherapy, are also at high risk.
Pregnancy carries a distinct danger. A pregnant woman may have only fever, muscle aches, and fatigue, yet the CDC warns that infection "usually leads to miscarriage, stillbirth, premature delivery, or life-threatening infection of the newborn." According to the CDC, symptoms of invasive illness usually start within two weeks of eating contaminated food but can appear as late as 10 weeks after.
In older adults and others, invasive Listeria infection can cause headache, stiff neck, confusion, loss of balance, and seizures. The CDC advises people with listeriosis symptoms who ate recalled food to contact a healthcare provider, especially if they are pregnant, 65 or older, or have a weakened immune system.
E. coli Warning Signs and Next Steps for Families
E. coli O157:H7 produces a toxin that damages the gut. According to the CDC's guide to E. coli symptoms, most people develop diarrhea that can be bloody or watery and stomach cramps that can be severe, sometimes with vomiting or a low fever. Symptoms typically start three to four days after exposure.
The CDC says to call a doctor for diarrhea or vomiting lasting more than two days, bloody stool or urine, or a fever above 102 degrees Fahrenheit. Parents should watch for signs of hemolytic uremic syndrome (HUS), a serious complication that can cause kidney failure. Signs include peeing very little, losing pink color in the cheeks and inside the lower eyelids, unexplained bruising, and extreme tiredness. The agency calls HUS "a medical emergency."
Treatment choices at home matter. The CDC's E. coli treatment guidance warns that "using antibiotics with STEC infection can increase the chance of HUS," and it advises against anti-diarrheal medicines such as Imodium for this type of infection for the same reason. Drinking plenty of fluids helps prevent dehydration.
Until a source is named, basic kitchen safety is the practical defense: washing hands and cutting boards, keeping raw meat away from ready-to-eat foods, and cooking meat thoroughly. Pregnant women and older adults can also follow existing CDC advice on higher-risk foods such as deli meats and unpasteurized cheeses.
Key Questions Answered
Which foods are linked to these outbreaks? None yet. FDA lists the product as "Not Yet Identified" for both the Listeria and the E. coli O157:H7 outbreaks.
How many people are sick? FDA lists 40 Listeria illnesses and 25 E. coli O157:H7 illnesses. Affected states, hospitalizations, and deaths have not been released.
Who is most at risk from Listeria? Pregnant women and their newborns, adults 65 and older, and people with weakened immune systems.
What are the main E. coli symptoms? Severe stomach cramps and diarrhea that may be bloody, sometimes with vomiting or a low fever.
Should I take antibiotics for E. coli diarrhea? The CDC advises against antibiotics for this type of E. coli because they can raise the risk of HUS, a serious kidney complication. Talk with a healthcare provider.
Published by Medicaldaily.com
