Health officials in Michigan have reported the first deaths linked to a record U.S. cyclosporiasis outbreak, with two individuals—both with significant underlying health conditions—dying after contracting the parasitic infection. The outbreak, now affecting at least nine states, has been traced to iceberg lettuce sourced from central Mexico and distributed by Taylor Farms, a produce supplier linked to Taco Bell restaurants. The company issued a voluntary recall of all iceberg lettuce from the region on [date not specified in sources].
The U.K. Health Security Agency (UKHSA) separately reported a sharp rise in cyclosporiasis cases among travelers returning from Mexico, with 67 cases documented between April 30 and July 15, compared to an annual average of 93 cases from 2022 to 2025. While the U.S. outbreak has been tied to a specific food source, U.K. officials have not yet identified a definitive origin for their cases.
Public health agencies are investigating whether the Michigan deaths were caused by lettuce from the recalled Taylor Farms supply or another yet-to-be-identified source. The U.S. Centers for Disease Control and Prevention (CDC) has recorded 6,707 laboratory-confirmed cases nationwide as of July 28, with over 11,500 suspected cases pending confirmation. State health departments report higher totals, as the CDC excludes probable cases from its count.
Outbreak Details and Official Responses
The Michigan Department of Health and Human Services confirmed the deaths on [date not specified in sources], noting that the individuals had pre-existing medical conditions that may have exacerbated the effects of dehydration caused by cyclosporiasis. Cyclospora infections typically cause watery diarrhea, stomach cramps, nausea, and fatigue, with symptoms appearing 2 to 14 days after exposure. Severe cases can lead to hospitalization, particularly in vulnerable populations.
The U.S. Food and Drug Administration (FDA) linked the outbreak to iceberg lettuce supplied by Taylor Farms, a privately held company operating in central Mexico. The lettuce was distributed to Taco Bell locations in multiple states, though investigators have not confirmed whether the recalled product was the sole source of the outbreak. Epidemiologists suspect multiple contamination points, including farms, water sources, or processing facilities, and are analyzing environmental samples to trace the origin.
Taylor Farms issued a voluntary recall of all iceberg lettuce from central Mexico, though authorities continue to investigate whether other produce items or supply chains may be involved. The CDC has not yet determined if the Michigan deaths were directly linked to the recalled lettuce, as some cases may stem from other contaminated sources.
Global Spread and Travel-Related Cases
In the United Kingdom, the UKHSA reported 67 cyclosporiasis cases among travelers returning from Mexico between April 30 and July 15, a significant increase from the annual average of 93 cases recorded from 2022 to 2025. Health officials have not yet identified a specific food source for these cases, though contaminated produce or water during travel is suspected.
Dr. John Brownstein, an epidemiologist and chief innovation officer at Boston Children’s Hospital, emphasized the challenges in tracing the infection’s origin. "It highlights a likely source at a country level, but we still don’t fully appreciate where the contaminations have occurred—farms, water, processing, or distribution," he stated. "We don’t even know if it’s one or several farms sharing a common source."
The World Health Organization (WHO) and other global health bodies have not issued travel advisories related to cyclosporiasis, but health experts recommend cooking produce or avoiding raw items in regions with known outbreaks.
Risk Factors and Prevention Measures
Cyclosporiasis is not typically life-threatening for healthy individuals, but severe dehydration can pose risks, particularly for those with underlying health conditions such as kidney disease, diabetes, heart failure, or weakened immune systems. Older adults, including those with dementia, are also at higher risk due to potential difficulties in recognizing dehydration symptoms.
Health experts advise the following precautions:
- Cooking produce thoroughly, as heat kills the parasite.
- Avoiding raw foods from regions with known outbreaks.
- Seeking medical attention if symptoms such as prolonged diarrhea develop, and requesting a Cyclospora-specific test, as standard stool tests may not detect the parasite.
- Rehydrating with electrolytes rather than plain water to replace lost salts.
The CDC notes that cases typically peak between May and August, with the current outbreak among the largest foodborne illness outbreaks in recent U.S. history. While the outbreak is expected to ease by late summer, health officials urge continued vigilance.
Economic and Consumer Impact
The outbreak has damaged consumer confidence in lettuce and restaurant chains, with lettuce sales declining and visits to establishments like Sweetgreen and Chipotle reportedly affected. The FDA’s investigation remains ongoing, and further recalls or advisories may be issued as new information emerges.
Public health agencies are coordinating with food safety regulators in Mexico to address potential contamination at the source. However, the exact origin of the outbreak—whether a single farm, water supply, or processing facility—remains unconfirmed.
Key Takeaways
- Two deaths in Michigan are the first confirmed fatalities linked to the U.S. cyclosporiasis outbreak.
- The outbreak has affected at least nine states, with 11,000+ confirmed cases nationwide.
- Taylor Farms recalled iceberg lettuce from central Mexico after the FDA linked the outbreak to their supply chain.
- U.K. cases among Mexico travelers have also risen, though the source remains unidentified.
- Health experts recommend cooking produce and seeking specific testing for Cyclospora infections.