The U.S. Food and Drug Administration (FDA) is currently investigating a number of outbreaks of foodborne illness in the United States.
The organization announced on Wednesday, January 15 that they were investigating a new outbreak of Listeria monocytogenes (Listeria).
Listeriosis, the infection caused by Listeria monocytogenes, is particularly dangerous for certain vulnerable populations. Pregnant individuals, people aged 65 or older, and those with weakened immune systems are at highest risk. Symptoms can include fever, muscle aches, headache, stiff neck, confusion, loss of balance, and convulsions, sometimes preceded by gastrointestinal symptoms. In pregnant individuals, listeriosis can lead to miscarriages, stillbirths, premature delivery, or life-threatening infections in newborns.
So far, 34 cases have been registered but no products have yet been linked to the infections.
The FDA has initiated traceback, a process used to trace the origin and distribution of the contaminated food, ensure its removal from the market, differentiate between multiple suspected products, and identify possible sources or pathways of contamination to help prevent similar outbreaks in the future.
The outbreak is still ongoing as of this writing.
Currently four other investigations are underway:
1.) Listeria monocytogenes
The day after Christmas 2024, the FDA posted that they had opened an investigation into another outbreak of Listeria. At this time, the organization has identified 32 cases of illness.
The specific product linked to these illnesses has not yet been identified but the FDA has initiated traceback analysis.
The agency has also started an inspection, an official process of inspecting facility operations to assess compliance with federal regulations. These inspections may involve activities such as reviewing records and collecting samples. The data in the table reflects only inspections performed by the FDA, although state and local partners often collaborate with the agency and may carry out additional inspections.
Along with initiating traceback and inspection, the FDA has also initiated sampling, a process where samples are collected to determine whether a pathogen is present in food or its surrounding environment. The table includes samples gathered either by the FDA or by states, with analysis performed by the FDA. Any significant findings are reviewed by the FDA and shared through Public Health Advisories.
The outbreak is still ongoing as of this writing.
2.) E. coli
On December 11, 2024 the agency announced they were investigating an outbreak of E. coli.
The majority of E. coli strains are not harmful and play a crucial role in maintaining a healthy gut ecosystem by assisting in breaking down the food, contributing to the production of essential vitamins, and acting as a defense mechanism against more dangerous microorganisms.
However, not all E. coli are benign. Certain strains can cause a range of health issues in humans, including gastrointestinal distress resulting in diarrhea, infections of the urinary tract, respiratory ailments like pneumonia, and even severe systemic infections such as sepsis. Symptoms generally appear two to five days after exposure but can emerge anywhere from one to eight days later. Most people recover within 5-10 days.
Of particular concern, however, is the potential for some patients to develop Hemolytic Uremic Syndrome (HUS), a severe complication that can lead to kidney failure, neurological damage, and in extreme cases, death. This risk makes early medical intervention crucial for infected individuals.
So far, 8 cases have been reported in this outbreak.
As of now, the FDA has only initiated traceback.
The outbreak, according to the agency, has ended.
3.) E. coli
Earlier in the month on December 4, 2024 the FDA reported they were investigating an outbreak of E. coli linked to romain lettuce. Interestingly, the agency has not yet identified the grower or any particular company involved.
Of all the active investigations, this one has the highest number of reported cases at 88.
The FDA has initiated traceback, inspection, and sampling.
The outbreak itself has been declared over.
4.) E. coli
The last investigation that is currently active has been ongoing since October 30, 2024. As of now, 10 cases have been reported but no product has been linked to the illnesses.
The FDA has initiated traceback, inspection, and sampling.
The outbreak has also been declared to be over.
Food Poisoning News will provide more information about each outbreak as it becomes available.
Commenting on this article, the nation’s leading Listeria and E. coli lawyer said, “While three of the investigations have not yet found a link between the illnesses and a particular product, the FDA investigation into one the E. coli outbreaks has identified romaine lettuce as the source. It is curious that the agency has not yet released the name of the specific product or company behind it.”
