Taylor Farms will stop selling iceberg lettuce in the U.S. and Canada that its workers harvest or process in Mexico between May 1 and Aug. 31, starting in 2027 — a four-month annual supply blackout triggered by the deadliest cyclospora outbreak in U.S. history, the Wall Street Journal reports.

Chief Executive Bruce Taylor announced the suspension but gave no date for lifting it. The window covers Mexico's rainy season, the period when the FDA found conditions that allowed the parasite to reach the company's lettuce supply.

The outbreak's scale was severe. Authorities believe up to 12,000 people fell ill from eating contaminated lettuce, and officials have reported two deaths. That casualty count makes cyclospora contamination a first-order sourcing risk for every distributor buying Mexican leafy greens — not a quality-control footnote.

What did the FDA actually find?

Last week the Food and Drug Administration closed its investigation into the outbreak and identified two sources for the parasite at Taylor Farms' Mexican operation: a wastewater tank and a drainage ditch used for lettuce cultivation.

What the agency did not establish matters just as much. The FDA does not know exactly how the parasite contaminated lettuce at the facility in Mexico, which remains closed. That gap in root-cause knowledge — a contaminated facility, an unproven transmission path, and no reopening date — is why the company is resorting to seasonal withdrawal rather than a targeted fix.

How is Taylor Farms hardening its supply chain?

Beyond the rainy-season blackout, the producer is layering safeguards across its Mexican sourcing network, according to the WSJ:

• Year-round health monitoring for its own staff and workers at the farms where it sources lettuce
• Increased testing of irrigation water and crops in central Mexico
• Greater investment in research and technology to improve cyclospora detection and prevention

Each measure attacks a known vector. Health monitoring targets worker-borne transmission; irrigation-water testing targets the wastewater-tank and drainage-ditch pathways the FDA identified; detection research addresses the fact that cyclospora screening methods today failed to catch contamination before product shipped.

What does the FDA do next?

The agency is stepping up preventive action ahead of the 2027 growing season. Its plans include more monitoring of certain agricultural commodities and evaluation of new tools. The FDA has not specified which commodities fall under enhanced surveillance or what the new tools will be, so produce distributors should treat the announcement as direction rather than a defined compliance regime for now.

What is at stake for produce distribution?

For wholesalers and foodservice distributors, the decision removes iceberg lettuce volume from the Mexican supply base during a quarter of the calendar year, beginning in 2027. Buyers who currently source Mexican iceberg through Taylor Farms or its competitors will need contracted alternatives — domestic growing regions or non-Mexican imports — to cover May through August, a window when summer foodservice demand runs at its peak.

The two identified contamination sources, both water-related, also raise the cost floor for any Mexican grower seeking to retain U.S. foodservice contracts: irrigation-water testing and drainage infrastructure are now table stakes, not differentiators. Distributors with dual-sourcing programs already in place will absorb the shift with less disruption than those single-sourced into central Mexico.

Taylor Farms' suspension, with no stated end date, signals that the company views seasonal risk as structural rather than fixable in a single cycle. The FDA's enhanced monitoring ahead of the 2027 season will show whether the rest of the industry faces the same calculus.