US Officials Declare End of Largest Recorded Cyclosporiasis Outbreak

United States health authorities have officially declared the conclusion of the nation’s largest recorded outbreak of cyclosporiasis, a parasitic illness that infected nearly 13,000 individuals across 21 states. The Centers for Disease Control and Prevention (CDC) stated on Friday that it is confident all recalled lettuce associated with the incident has been removed from commercial shelves.

The CDC reported a total of 12,883 confirmed cases linked to the outbreak, which resulted in 570 hospitalizations and two fatalities. Michigan was the hardest-hit state and accounted for both deaths. Symptoms of cyclosporiasis typically emerge approximately one week after exposure, though they can appear between two days and two weeks post-infection. Common indicators include frequent watery diarrhea, appetite loss, weight reduction, abdominal cramps, bloating, gas, nausea, and severe fatigue.

The source of the outbreak was traced to iceberg lettuce produced by Taylor Farms de Mexico in central Mexico. The company initiated a recall of all its iceberg lettuce from the region on July 17. While the initial alarm was raised regarding lettuce served at Taco Bell locations, federal investigators subsequently identified Taylor Farms as the distributor responsible for supplying the contaminated product to restaurants and retailers nationwide.

Infections peaked at more than 1,000 cases in a single day, but by August, the CDC reported that new infections had dropped to an average of fewer than two per day. This event contributed to an unprecedented surge in cyclosporiasis cases across the US this year. Since May 1, nearly 20,000 laboratory-confirmed cases have been recorded, representing a increase of more than 16 times compared to the same period last year. The previous annual record stood at approximately 4,700 illnesses in 2019.

The outbreak has intensified scrutiny of US food safety regulations, particularly regarding the government’s capacity to detect contaminated produce prior to consumer distribution. Data from the Government Accountability Office indicates that FDA inspections of foreign food facilities have declined significantly in recent years. Although the FDA is mandated to inspect over 19,000 international food sites annually, it achieved only 1,700 inspections in 2019, falling below one-tenth of the target.

The FDA did not inspect the Mexican farm implicated in the outbreak until roughly a month after the investigation commenced. Additionally, the Trump administration has reduced funding for FoodNet, halting the program’s mandatory tracking of Cyclospora and five other pathogens. A Food Safety Modernization Act rule aimed at enhancing traceability for high-risk foods, including leafy greens, has also been postponed until 2028.

Regarding the current investigation, the FDA announced it has finished on-site inspections and sample collection at iceberg lettuce farms and a processing facility in Mexico. However, laboratory analysis of these samples remains pending. The agency stated it will continue collaborating with state and federal officials in Mexico to investigate the outbreak further.