Federal health officials confirmed Thursday that a multistate Cyclospora outbreak linked to recalled iceberg lettuce has now sickened 11,458 people across 20 states, marking the largest outbreak of its kind in U.S. history. The U.S. Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA) have traced the contamination to iceberg lettuce processed at Taylor Farms de Mexico, a facility in central Mexico, which voluntarily recalled the affected produce on July 17.
New developments and confirmed actions:
- The outbreak expanded to three additional states—Georgia, Tennessee, and Texas—bringing the total to 20 states affected. The most severe impacts remain in Michigan (4,846 cases), Ohio (2,679 cases), and Missouri (1,010 cases).
- Two deaths in Michigan have been linked to the outbreak, both involving individuals with significant underlying health conditions, according to the state’s Department of Health and Human Services.
- The FDA stated it is confident all recalled lettuce is off the market and continues inspections and testing at the Taylor Farms facility in cooperation with Mexican authorities.
Scope and timeline of the outbreak
The first illnesses were reported on June 14, with the most recent confirmed cases occurring on August 15. Health officials warn the true number of cases is likely higher due to underreporting, as many individuals may not seek medical care or undergo testing. The CDC noted that recent illnesses may not yet be recorded because Cyclospora infections can take up to six weeks to confirm. The agency is conducting genotyping on parasite samples to identify additional cases tied to this outbreak.
Public health response and investigation
Federal and state investigators are collaborating to trace the source of contamination. The FDA and CDC have focused their probe on Taylor Farms de Mexico, a major produce supplier. CBS News reported that the FDA’s last inspection of the facility occurred seven years prior to the outbreak, raising questions about oversight. Taylor Farms stated it is conducting a comprehensive review of its operations and is working with experts to address the contamination.
Understanding Cyclospora and its spread
Cyclospora is a microscopic parasite that causes cyclosporiasis, an illness characterized by watery diarrhea, frequent bowel movements, and sometimes explosive symptoms. The parasite thrives in warm conditions and spreads through fecal contamination. Unlike other foodborne pathogens such as salmonella or E. coli, Cyclospora infections are less common and often go unreported, as many cases are not linked to a specific food source.
This year, the U.S. has seen approximately 29,000 confirmed or suspected Cyclospora cases, with 922 hospitalizations reported. The 2019 outbreak was previously the worst on record, with about 4,700 illnesses nationwide. Health officials emphasize that outbreaks tend to peak in late spring and summer, aligning with the current timeline of this event.
State-by-state impact
The following states have reported cases:
Arkansas, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Massachusetts, Michigan, Missouri, Nebraska, New Hampshire, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, West Virginia.
Key questions and ongoing efforts
- Why did the outbreak occur? Investigators are examining potential gaps in food safety protocols at Taylor Farms de Mexico, including inspection frequency and contamination controls.
- Is the recalled lettuce fully removed from the supply chain? The FDA asserts that all affected produce has been recalled, but officials continue monitoring to prevent further distribution.
- What measures are being taken to prevent future outbreaks? The FDA is reviewing its inspection protocols for foreign produce facilities, while Taylor Farms has pledged to enhance its safety reviews.
Health authorities urge individuals experiencing prolonged diarrhea or flu-like symptoms to seek medical attention and inform their providers about recent lettuce consumption. The CDC advises that thorough washing of produce may reduce but does not eliminate the risk of Cyclospora infection.