A widespread outbreak of cyclosporiasis has not only caused illness across several U.S. states but is also placing significant strain on lettuce growers in California’s Salinas Valley, a major hub for the nation’s lettuce production. The outbreak, linked to lettuce products sourced from a facility in central Mexico and distributed by Taylor Farms de Mexico, has led to a marked decline in consumer demand for lettuce, impacting farmers and the broader fresh produce supply chain.

Cyclospora, the parasite responsible for cyclosporiasis, causes intestinal illness characterized by symptoms such as sudden, watery diarrhea, abdominal cramping, bloating, and fatigue. Since the outbreak began earlier this year, at least 1,947 cases have been reported across nine states, prompting consumer caution regarding fresh lettuce consumption.

Larry Cox, operator of Coastline Family Farms in Salinas Valley, said he was compelled to discard large quantities of his lettuce crop amid the downturn in sales. This week alone, Cox estimated that he discarded approximately 300,000 pounds of romaine hearts. Despite the outbreak’s association with lettuce sourced from Mexico, the spillover effects have been felt strongly in the Salinas Valley, often referred to as “America’s Salad Bowl,” which accounts for nearly half of U.S. lettuce production.

Retail data shows a significant shift in consumer behavior following the outbreak. Industry analysts reported that traffic at restaurants known for salad offerings, including fast-casual chains like Taco Bell and Chopt, has declined by as much as 21% during the current year. Additionally, NielsenIQ data indicated an 8.7% decrease in fresh lettuce unit sales throughout much of July compared with the previous year, equating to over 7.6 million pounds of reduced lettuce sales. Other fresh produce categories have also experienced declines as consumers remain cautious.

Joelle Mosso, representing Western Growers, a trade association for family-owned farms, confirmed that many California growers have resorted to plowing crops back into the soil rather than harvesting lettuce that is unlikely to sell. She noted that consumer uncertainty is leading to widespread hesitation in purchasing fresh produce.

Experts highlight that the impact of such outbreaks on produce sales can be prolonged. Max Teplitski, chief science officer at the International Fresh Produce Association, compared the current situation to the 2006 E. coli outbreak linked to spinach, which suppressed sales for years afterward.

In an effort to counter the declining demand, some restaurant chains have introduced promotions and menu adjustments. Taco Bell, for example, has launched a series of discounted lettuce-free options to encourage customer visits.

The downturn is having tangible effects on the agricultural workforce as well. Cox reported a 20% to 30% drop in sales for his farm—a supplier to major restaurant chains and grocery stores—which has led to cuts in farmworker jobs. Despite the challenges, lettuce harvesting continues, even though a substantial portion of the crop goes unsold and is destroyed.

Cox emphasized resilience within the industry, stating that while the current situation is “incredibly demoralizing,” farmers must persist. “You better pick yourself up, dust yourself off and keep pushing forward,” he said.