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Michigan reports first two deaths in major cyclospora outbreak

Cases Of Cyclosporiasis, Caused By Parasite Infection From Produce, Continue To Rise
AUSTIN, TEXAS - JULY 23: Parsley is displayed for sale on shelves at a Walmart Supercenter on July 23, 2026 in Austin, Texas. The cyclosporiasis outbreak, an intestinal illness caused by the microscopic parasite Cyclospora cayetanensis, has spread across multiple states and remains under investigation by federal health officials after the first known illness onset was reported in early May.
Photo by Brandon Bell/Getty Images


Michigan health officials on Monday announced the state’s first two deaths linked to a widespread cyclosporiasis outbreak that has sickened more than 11,000 people statewide.

The Michigan Department of Health and Human Services said both individuals had significant underlying health conditions that may have been impacted by the parasitic infection and resulting dehydration. No further details about the victims, including ages or locations, were released. Officials noted that cyclosporiasis is generally not life-threatening and that deaths from the illness remain uncommon in the United States.

As of Monday, Michigan reported 11,234 outbreak-linked cases, an increase of 461 from the previous update, along with 193 hospitalizations. Wayne County, which includes Detroit, has recorded the highest number of infections. The U.S. Centers for Disease Control and Prevention said it is aware of the two deaths involving people with underlying conditions from Michigan.

Cyclosporiasis is caused by the microscopic parasite Cyclospora cayetanensis, which spreads through contaminated food or water. Symptoms typically include frequent, sometimes explosive watery diarrhea, along with fatigue, loss of appetite, and stomach cramps. The illness can last weeks without treatment and poses greater risks to people with weakened immune systems or other health issues.

Federal investigators have linked a portion of the multistate outbreak to shredded iceberg lettuce from Taylor Farms operations in central Mexico that was served at some Taco Bell restaurants. The company issued a voluntary recall of the product in mid-July. Cases have been reported across dozens of states this season, with Michigan seeing by far the largest concentration. Health officials continue investigating additional potential sources as the typical spring-and-summer season for the parasite continues.

The CDC has tracked thousands of laboratory-confirmed domestic cases nationwide this year, with many more under review. Public health agencies urge people experiencing prolonged diarrhea to seek medical care, especially if they have other health conditions. Cooking produce thoroughly or avoiding potentially contaminated fresh items remains among the recommended precautions while the investigation proceeds.

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