The number of patients reported in the ongoing Escherichia coli outbreak linked to onions served at McDonald’s restaurants has grown to 104 people across 14 states. A patient has recently been reported in North Carolina.
Between 2017 and 2019, Canadian public health laboratories transitioned to whole genome sequencing (WGS) for foodborne illness outbreak surveillance. A recent study shows the positive impact of this transition of national outbreak detection and response for important foodborne pathogens.
Although the U.S. Food and Drug Administration (FDA) was investigating a grower of interest in Washington state, the agency has been unable to definitively implicate a grower in the Escherichia coli outbreak linked to onions supplied by Taylor Farms and served at McDonald’s.
The Canadian Food Inspection Agency (CFIA) has completed its root cause investigation of the summer 2024 listeriosisoutbreak linked to plant-based Silk and Great Value milks. The agency was unable to confirm the primary source of the contamination, but found that the production facility was not compliant with testing requirements.
In the debut installment of the Food Safety Five Newsreel, we discuss an ongoing multistate outbreak of Escherichia coli infections linked to onions served at McDonald’s restaurants. The episode also takes a look at legislation passed in California that marks the country’s first mandatory food date labeling reforms.
The U.S. Centers for Disease Control and Prevention (CDC) has officially named Taylor Farms onions served at McDonald’s as the source of the recent Escherichia coli outbreak, and has reported 90 illnesses, 27 hospitalizations, two cases of Hemolytic Uremic Syndrome, and one fatality.
Testing has shown no sign of Escherichia coli contamination in McDonald’s Quarter Pounder beef patties, and traceback and epidemiological data have ruled out beef as the cause of the ongoing E. coli outbreak. Quarter Pounders have returned to the menu at affected McDonald’s locations—without slivered onions.
Amid the ongoing E. coli outbreak, Taylor Farms has been confirmed as the onion supplier to the affected McDonald’s locations. As a result, national restaurant chains are proactively pulling onions from their menus. FDA is still investigating whether onions are the vehicle of illness.
A foodborne illness outbreak linked to McDonald’s Quarter Pounders contaminated with Escherichia coli has caused 49 illnesses, ten hospitalizations, and one death in ten states. Slivered onions used on the sandwiches are the probable vehicle of illness.
