Centralized sourcing and distribution networks can turn a local contamination event into a multistate crisis, food safety experts say
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Food industry consolidation is amplifying the scale of the cyclospora outbreak that has sickened thousands across the United States, food safety experts say, as centralized sourcing and distribution networks carry contamination far beyond where it originates.
"Consolidation means that if something goes wrong, it goes wrong big time," Marion Nestle, professor emerita of nutrition, food studies and public health at New York University, told CNBC. "The bigger the supplier, the greater the opportunity for contamination."
The current outbreak has focused investigators on shredded iceberg lettuce processed by Taylor Farms and distributed through its foodservice business to Taco Bell restaurants and other customers across multiple states, according to CNBC. On July 17, Taylor Farms de Mexico recalled all iceberg lettuce sourced from central Mexico, covering products sold in at least 27 states to consumers, restaurants, and retailers.
Dr. David Relman, a professor of microbiology and immunology at Stanford University, said consolidation transforms the downstream consequences of a single contamination event. "It's possible that as food sourcing and distribution becomes consolidated you get pooling and then redistribution of what might have been a very local contamination problem, so that it now becomes a widely distributed contamination problem," David Relman said. He pointed to bagged, chopped lettuce as an example: a single contaminated batch can draw from many heads and then move through far-reaching distribution networks.
Taylor Farms has expanded its footprint considerably over the last decade by buying up other companies, acquiring Earthbound Farm in 2019, Curation Foods in 2021, and Equinox Growers earlier this year. The restaurant supply sector has undergone similar consolidation, with major broadline distributors including Sysco, U.S. Foods, and Performance Food Group now reaching hundreds of thousands of restaurants and institutional kitchens across the country.
Not every expert views consolidation as a liability. Timothy Lytton, a health and safety regulation expert at Georgia State University, argued that scale can actually be an advantage, since larger produce operations tend to have the resources to build out rigorous food safety infrastructure that smaller farms simply cannot match. "It's not entirely clear that larger operations have more food safety problems than smaller operations," Lytton said. Lytton nonetheless conceded that a large distribution network changes the math when something does go wrong, making any resulting recall far more sweeping and difficult to execute.
The outbreak initially centered on Taco Bell restaurants in Indiana, Kentucky, Michigan, Ohio, and West Virginia, where more than 1,644 people were linked to Taylor Farms lettuce and 94 were hospitalized. The recall was later expanded to cover products distributed across 27 states, including retail items sold under the Marketside brand at Walmart $WMT stores. The CDC notes that the true case count is likely higher because many people recover without seeking medical care or testing.
Relman said the outbreak points to a broader vulnerability in how food safety systems are understood. "We often don't appreciate a system like the food inspection system, or the public health system in large until it fails," he said.
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