The United States has recently concluded the largest cyclospora food poisoning outbreak in its history, as announced by U.S. health officials on Friday. The U.S. Food and Drug Administration (FDA) confirmed that all recalled iceberg lettuce associated with this specific outbreak has been removed from the market.
Approximately 13,000 reported cases of cyclospora were linked to this widespread outbreak across multiple states, according to federal officials. While Canada has experienced isolated instances of cyclospora cases in recent years, no Canadian cases were connected to this particular outbreak.
Despite the closure of the outbreak, various unanswered questions persist, particularly regarding its origin. The parasite responsible for cyclospora is transmitted through human waste, raising uncertainties about how sewage could have contaminated enough food to cause illness in a significant number of individuals.
Ellen Shumaker, the outreach director for Safe Plates, a food safety program at North Carolina State University, noted that contamination can occur when produce is cultivated in contaminated soil or comes into contact with polluted water.
Since May 1, the government has received reports of nearly 20,000 laboratory-confirmed cases, a stark increase compared to the same period last year. Additionally, over 6,100 suspected cases have been reported. The previous peak year for cyclospora infections in the U.S. was 2019, with around 4,700 reported illnesses nationwide.
Cyclospora is a minuscule, spherical parasite known to cause watery diarrhea, often accompanied by frequent and sometimes intense bowel movements. Referred to as cyclosporiasis, this illness is less common than foodborne illnesses caused by other pathogens such as salmonella and E. coli, with many cases remaining unlinked to any specific food source.
The recent surge in cyclospora cases was primarily associated with an outbreak in 21 states linked to iceberg lettuce. However, numerous additional cases have not been tied to this specific outbreak. The state most severely impacted by the outbreak was Michigan, reporting the highest number of cases and two deaths in the U.S. related to the outbreak.
Initially focusing on lettuce served at Taco Bell, investigators later identified Taylor Farms as the source of the contaminated lettuce. As a result, the company recalled iceberg lettuce originating from central Mexico, distributed in various packaged salad products to major U.S. restaurant chains.
The FDA announced the conclusion of on-site inspections and sample collection at iceberg lettuce growers and the processing facility in Mexico on Friday. Analysis of samples collected during these inspections is currently pending. The outbreak has drawn attention to a growing issue – a decrease in international inspections by U.S. regulators aimed at identifying contaminated produce before it reaches American consumers.
