First Deaths from Cyclosporiasis Reported in the United States

Health authorities in Michigan, alongside the Centers for Disease Control and Prevention (CDC), have confirmed the first fatalities linked to the ongoing cyclosporiasis outbreak affecting the nation. Two individuals have died in Michigan as a result of this outbreak.

These deaths mark a historic moment as they are the first-ever fatalities associated with cyclosporiasis in the U.S.

The Michigan Department of Health and Human Services (MDHHS) noted that both deceased individuals had pre-existing medical conditions that may have been exacerbated by the infection and dehydration.

"Medical records show that both individuals had significant underlying health issues that could have been worsened by cyclosporiasis and dehydration. No further details on these cases will be provided," the department stated in a release.

Despite the unprecedented nature of these deaths, the Michigan Health Department emphasized that cyclosporiasis is "generally not life-threatening."

The CDC acknowledged the situation, stating that they are aware of "two deaths related to cyclosporiasis among individuals with underlying health conditions in Michigan as part of this outbreak."

Michigan: The Epicenter of a Record Outbreak

Currently, Michigan is at the heart of the largest cyclosporiasis outbreak ever recorded in the United States, with 11,234 cases and 193 hospitalizations as of the time the deaths were confirmed.

Nationwide, the CDC has identified over 18,000 domestic cases during the 2026 season: 6,707 confirmed and approximately 11,500 under laboratory review.

The multi-state outbreak is primarily affecting nine states: Indiana, Kentucky, Michigan, Ohio, West Virginia, Illinois, Kansas, Oklahoma, and Pennsylvania.

While Florida is not among these main affected states, recent reports indicate that the number of cases there has tripled.

In a previous outbreak in 2018 linked to McDonald’s salads, 511 cases were confirmed across 15 states, but no fatalities occurred.

Probable Source: Taylor Farms Lettuce

The Food and Drug Administration (FDA) has identified shredded iceberg lettuce from Taylor Farms, processed in Guanajuato, Mexico, and distributed across 27 states between June 29 and July 16, as the likely source of the outbreak.

Taylor Farms issued a voluntary recall of the affected product.

The MDHHS reported that the two deceased individuals fell ill before the FDA's recall of the lettuce.

Taco Bell emerged as one of the initial hotspots, with 1,947 people reporting infections after dining at their restaurants, leading to at least 98 hospitalizations.

Visits to Taco Bell dropped by nearly 31% on the day of the recall, and lettuce sales in supermarkets fell by about 11%.

Understanding Cyclosporiasis and Its Risks

Cyclosporiasis is an infection caused by the microscopic parasite Cyclospora cayetanensis, transmitted through consuming contaminated fresh produce or water, but not spread from person to person.

Symptoms include severe watery diarrhea, abdominal cramps, nausea, fatigue, and mild fever, typically appearing two to 14 days after exposure.

Dr. Fabián Sandoval, president of the Emerson Clinic, highlighted those most at risk in an interview, mentioning, "Children and elderly adults, who may not stay well-hydrated or have weakened immune systems, face the greatest risks."

Dr. Sandoval also questioned potential causes for the fatalities, pondering, "Are we witnessing antibiotic resistance, or is there a delay in patients seeking emergency care?"

The parasite cannot be eliminated with regular disinfectants; only cooking can destroy it.

Health authorities advise those experiencing persistent diarrhea for more than four or five days without improvement to seek emergency care for a stool test.

The outbreak remains active, with the CDC warning that they expect case numbers to continue rising as more data becomes available.