One Saturday lunch. Three weeks later, one diner had a laboratory-confirmed parasite and the other was on antibiotics. That is the story now driving a federal lawsuit against one of the country's biggest quick-service chains and one of its largest produce processors—and it lands as the CDC tracks a cyclosporiasis outbreak that has ballooned to nearly 7,000 illnesses.
For food and beverage operators, foodservice executives, and procurement directors, this is more than courtroom drama. It is a live case study in supply-chain accountability, produce traceability, and how quickly a single contaminated ingredient can travel from field to menu to headline.
What the Lawsuit Alleges
Karl and Gina Hercula, a husband and wife from Clinton Township, Michigan, have sued Taco Bell and produce processor Taylor Farms in federal court, alleging that shredded iceberg lettuce served at a Macomb County Taco Bell infected them with Cyclospora during the ongoing multistate outbreak now under investigation by federal and state health officials.
The complaint, Hercula v. Taco Bell of America, LLC, et al., was filed July 20, 2026 in the United States District Court for the Eastern District of Michigan, Southern Division. It names Taco Bell of America, LLC; Taco Bell Corp.; Taylor Fresh Foods, Inc.; and Taylor Farms California, Inc., along with unidentified John Doe corporations. A jury trial has been demanded; a case number has not yet been assigned.
The plaintiffs are represented by William D. Marler of Marler Clark, The Food Safety Law Firm, and by local counsel Drew A. Ruby of Ruby Injury Law in Farmington Hills.
According to the complaint, the Herculas purchased and ate meals at the Taco Bell at 37510 Gratiot Avenue in Clinton Township on June 21, 2026, and both meals contained fresh iceberg lettuce. The timeline of illness reads like a warning label:
- Gina Hercula became ill on or about July 6 and sought emergency room care the following day. She returned for urgent care twice more, provided a second stool sample, and began antibiotics before that sample tested positive for Cyclospora on or about July 14.
- Karl Hercula became ill on or about July 10 and was treated at urgent care on July 13, where he was prescribed trimethoprim-sulfamethoxazole—the recommended treatment for cyclosporiasis.
The complaint states that both plaintiffs are still recovering. It alleges the Taylor defendants grew, processed, packaged and distributed the shredded iceberg lettuce supplied to Taco Bell restaurants in Indiana, Kentucky, Michigan, Ohio and West Virginia—including the Clinton Township location—and that Taco Bell prepared and sold the contaminated food. The suit brings claims for strict product liability, breach of express and implied warranties, negligence, negligence per se, and violation of the Michigan Consumer Protection Act.
"This case is about a meal, not a theory," said Marler. "Two people ordered lunch on a Saturday in June. Three weeks later one of them had a laboratory-confirmed parasite and the other was on Bactrim. The lettuce that did that came from somewhere, and somebody sold it."
The Scale of the Cyclospora Outbreak
The numbers explain why this case matters far beyond one Gratiot Avenue drive-thru. The Centers for Disease Control and Prevention issued a Health Alert Network advisory on July 14, 2026, reporting 1,645 laboratory-confirmed domestic cyclosporiasis cases since May 1—and noting it was aware of more than 5,100 additional cases requiring further analysis. That's nearly 7,000 people in all.
For context, during the same period in 2025 the CDC reported just 249 cases nationally. The confirmed 2026 cases came from 34 states, ranged in age from 2 to 95 years, and included 141 hospitalizations.
The same day, the CDC posted an outbreak investigation notice reporting more than 400 illnesses across Michigan, Ohio, West Virginia and Kentucky in a single epidemiologically linked cluster. On July 17, Taylor Farms announced a recall of iceberg lettuce grown in central Mexico. Earlier in July, Taco Bell restaurants in Michigan and elsewhere posted signs telling customers the chain could no longer serve lettuce, cilantro, onion, pico de gallo or guacamole.
The Traceability Question Operators Can't Ignore
Marler—featured in the Netflix documentary Poisoned: The Dirty Truth About Your Food—zeroed in on a regulatory delay that should get every leafy-greens buyer's attention.
"What ought to bother people is how long it took to name a product," Marler said. "The federal rule that would have required lot-level traceability records on leafy greens was supposed to take effect on January 20 of this year. It was pushed to 2028. These illnesses began in May. We spent two months doing by hand what the law was supposed to be doing automatically."
That gap—between the pace of an outbreak and the pace of tracing it—is the crux of the industry lesson here.
Why Fresh Produce Sits at the Center
Cyclosporiasis is caused by the microscopic parasite Cyclospora cayetanensis, which people contract by consuming contaminated food or water. Symptoms typically begin about a week after exposure and include frequent watery diarrhea, appetite and weight loss, bloating, nausea and fatigue. Left untreated, the illness can follow a relapsing course lasting a month or longer.
Because contamination originates in the field and in water before produce reaches a kitchen—and because ordinary washing may not eliminate the parasite—the complaint alleges the burden of prevention falls on those who grow, process, distribute and sell fresh produce.
"Cyclospora is not a mistake that happens in a restaurant kitchen," Marler said. "By the time lettuce reaches a Taco Bell on Gratiot Avenue, whatever went wrong went wrong a long way upstream. That is why we sued the grower and the processor as well as the chain that served it."
Why It Matters
For restaurant owners, QSR operators, foodservice executives, and institutional buyers, this lawsuit is a preview of where liability and reputational risk are heading in the fresh-produce supply chain. A few concrete takeaways:
- Liability runs the whole chain. The complaint targets the grower, the processor, and the chain that served the food. If you buy, prep, or sell fresh leafy greens, you are part of that chain—and a recall upstream can put your brand in the headline.
- Don't wait for 2028 to build traceability. With the federal lot-level traceability rule for leafy greens pushed to 2028, the responsibility to know your product's origin, lot, and supplier documentation falls on operators now. Demand lot-level records from suppliers, log deliveries, and keep the paperwork that lets you trace a suspect ingredient in hours, not weeks.
- Have a produce contingency plan. Taco Bell pulled lettuce, cilantro, onion, pico de gallo and guacamole from menus. Know in advance how you'd communicate substitutions, adjust menus, and protect guest trust if a core ingredient disappears overnight.
- Vet your produce partners on food safety. Sourcing decisions are food-safety decisions. Prioritize suppliers with strong testing, transparent recall protocols, and rapid traceback capability.
The practical bottom line: food safety is now a procurement and brand-protection strategy, not just a compliance checkbox. Operators who tighten sourcing documentation and supplier accountability today are the ones best positioned when the next outbreak notice lands.
What's Next
Marler Clark, The Food Safety Law Firm, is the nation's leading firm representing victims of foodborne illness, having represented thousands of individuals and recovered more than $900 million for clients. William Marler began representing foodborne illness victims in 1993 as lead counsel in litigation arising from the Jack in the Box E. coli O157:H7 outbreak, and has since litigated cases involving E. coli, Salmonella, Listeria, Cyclospora, hepatitis A and other pathogens.
As the CDC investigation continues and Taylor Farms' recall plays out, expect renewed pressure on leafy-greens traceability across the foodservice industry.
How resilient is your produce supply chain to a sudden recall? Read our related coverage on advancing health and sustainability in foodservice and on what restaurant professionals need to know about sourcing decisions—then weigh in below with how your operation is handling produce traceability.
Written by Michael Politz, Author of Guide to Restaurant Success: The Proven Process for Starting Any Restaurant Business From Scratch to Success (ISBN: 978-1-119-66896-1), Founder of Food & Beverage Magazine, the leading online magazine and resource in the industry. Designer of the Bluetooth logo and recognized in Entrepreneur Magazine’s “Top 40 Under 40” for founding American Wholesale Floral. Politz is also the founder of the Proof Awards and the CPG Awards and a partner in numerous consumer brands across the food and beverage sector.
