Health officials in southeastern and mid Michigan are tracking a fast growing cyclospora outbreak that has expanded into seven counties, with case totals already far outpacing what the state typically sees in an entire year. The investigation now covers Monroe, Lenawee, Washtenaw, Wayne, Livingston, Shiawassee and Jackson counties, where more than 170 illnesses linked to cyclospora have been reported since late June.
Michigan Department of Health and Human Services spokesperson Lynn Sutfin said the current count dwarfs a typical year, when the state usually logs around 50 cyclospora cases in total. That gap has pushed state and local health departments into an active, multi jurisdictional investigation aimed at finding a common source before case numbers climb further.
What causes cyclospora illness
Cyclosporiasis is a diarrheal illness caused by a microscopic parasite called cyclospora cayetanensis. The organism spreads through food or water contaminated with feces, and cyclospora infections in the country have historically been linked to fresh produce, particularly during the warmer months when consumption of raw fruits and vegetables tends to rise. Health officials say the parasite is not known to spread directly from person to person, which points investigators toward a shared food or water exposure rather than close contact between patients.
Symptoms typically include frequent watery diarrhea, loss of appetite, bloating, nausea and fatigue. Some patients also report body aches, headaches or vomiting. Left untreated, the illness can drag on anywhere from a few days to a month or longer, and symptoms sometimes appear to fade before returning in waves. Cyclospora infections can be treated with antibiotics once diagnosed, though officials say not every patient is a candidate for that treatment.
An investigation without a confirmed source
As of the latest update, health officials have not pinpointed the specific food, product or supplier behind the cyclospora cluster. The health department is coordinating case interviews across the affected counties while sharing findings with federal partners, including agricultural regulators, in an effort to trace the exposure back to its origin…