ENVIRONMENT

U.S. Cyclospora Outbreak Surpasses 15,700 Cases

PUBLISHED Aug 20, 2026, 1:28 PM ET

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The U.S. Centers for Disease Control and Prevention (CDC) has reported 15,716 laboratory-confirmed cases of cyclosporiasis since May 1, marking the nation's worst year for the foodborne illness on record. The outbreak has spread to 47 states, the District of Columbia, and Puerto Rico, with only Delaware, New Mexico, and Hawaii yet to report cases . At least 828 patients have been hospitalized, and two deaths have been reported . Patients range in age from one to 99 years, with a majority (57%) being female . The CDC is aware of 11,841 additional cases that are not laboratory-confirmed or require further investigation, and the agency notes the true number of illnesses is likely higher as many people recover without seeking medical care . The largest cluster, affecting 17 states, has been traced to iceberg lettuce sourced from central Mexico by Taylor Farms . The U.S. Food and Drug Administration (FDA) linked shredded iceberg lettuce served at Taco Bell to this specific outbreak. States affected in this cluster include Arkansas, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Massachusetts, Michigan, Missouri, Nebraska, New Hampshire, North Carolina, Ohio, Oklahoma, Pennsylvania, and West Virginia . Taylor Farms recalled all iceberg lettuce sourced from central Mexico in July and temporarily suspended production from the region . Taco Bell states it has removed the affected lettuce from its supply chain nationwide . The FDA says it is "confident" all contaminated lettuce from the company is now off the market but continues investigating several other cyclosporiasis outbreaks . Cyclospora is a microscopic parasite contracted through food or water contaminated with human feces. Symptoms include frequent and explosive diarrhea, stomach cramps, bloating, nausea, and fatigue. The FDA warns untreated cases can lead to severe dehydration and complications, though the illness does not spread from person to person . The CDC reports that as of August 18, Maine and Massachusetts are the most recent states to confirm cases of the illness .

By Daniel Hayes | JQJO News

Timeline of Events

On May 1, 2026: Cyclospora outbreak surveillance begins as seasonal monitoring period starts.
· On July 18, 2026: FDA announces positive Cyclospora test on Taylor Farms lettuce sample.
· On July 19, 2026: FDA retracts positive test, declares it was a false positive.
· On July 20, 2026: Taylor Farms initiates voluntary recall of all central Mexico iceberg lettuce.
· On July 20, 2026: Mexican health officials inspect Taylor Farms plant, find no contamination.
· On August 1, 2026: Michigan reports first two deaths linked to the Cyclospora outbreak.
· On August 13, 2026: FDA confirms 17 states affected, 9,481 illnesses linked to lettuce.
· On August 18, 2026: Maine and Massachusetts report cases, expanding outbreak reach.
· On August 19, 2026: CDC reports 15,716 confirmed cases, 828 hospitalizations recorded.
· On August 20, 2026: Health authorities continue investigating seven unresolved outbreaks.

News Intelligence

Immediate US impact: Outbreak causes widespread foodborne illness across 47 states.
Long-term US impact: Food safety monitoring gaps may lead to future outbreaks.
Affected groups: Consumers nationwide, especially in Michigan, and Taco Bell patrons.
Reader priorities: Follow CDC and FDA advisories on contaminated produce sources.