La possibile origine dell'epidemia di diarrea parassitaria negli Stati Uniti è legata a un importante franchise di fast food

A major outbreak of cyclosporiasis linked to contaminated food has prompted health authorities in the United States to issue urgent warnings. The Centers for Disease Control and Prevention (CDC) have confirmed nearly 7,000 cases, both confirmed and suspected, across 34 states. The illness, caused by the parasite Cyclospora cayetanensis, spreads through the consumption of contaminated food or water. While the exact origin of the outbreak remains under investigation, preliminary findings point to a connection with a widely known fast-food chain. The CDC and the Food and Drug Administration (FDA) have identified shredded iceberg lettuce served at some locations of Taco Bell as a potential source of contamination. This link was established after tracing illnesses in five states, Indiana, Kentucky, Michigan, Ohio, and West Virginia. Health officials advised residents in these areas to avoid consuming shredded iceberg lettuce from Taco Bell restaurants. The warning came following reports that over 1,600 individuals who fell ill had consumed food at Taco Bell locations in those states prior to becoming sick. In response to the growing concern, Taco Bell has taken precautionary measures to remove potentially affected lettuce from its supply chain. The company stated that it is working closely with public health authorities and has initiated a voluntary recall of the ingredient sourced from a supplier. It added that the contaminated product will be permanently removed from its national supply chain and replaced within 24 hours in the affected states. However, the specific supplier responsible for the lettuce has yet to be officially named. According to media reports, the implicated lettuce may have been supplied by Taylor Farms, one of the largest distributors of fresh vegetables in the U.S. Taylor Farms has previously faced scrutiny over foodborne illness outbreaks. In 2024, its products were linked to an E. coli outbreak tied to sliced onions, and in 2013, the company was associated with a cyclosporiasis outbreak involving lettuce. Despite this history, the extent of its involvement in the current incident remains unclear. Authorities have not disclosed how many of its products or other establishments might have received the potentially contaminated batches. Health officials emphasized that while they have not yet confirmed all cases are directly connected to a single source, the sudden and concentrated rise in infections strongly suggests that the majority of cases stem from a common exposure. If this hypothesis proves correct, the outbreak would represent the largest recorded incidence of cyclosporiasis in the country’s history. The CDC continues to monitor the situation and is collaborating with state and local health departments to trace additional cases and determine the full scope of the outbreak. As investigations continue, public health agencies urge consumers to remain vigilant and follow guidance regarding food safety. Taco Bell has reiterated its commitment to ensuring customer safety and has pledged to take further steps to prevent future incidents. Meanwhile, regulatory bodies are assessing whether additional actions are needed to address the broader implications of the outbreak, particularly given the role of large-scale food suppliers in such scenarios.