Michigan Cyclosporiasis Outbreak Surges Past 13,900 Cases, Up More Than 1,400 in One Week

Michigan health officials reported 13,909 cyclosporiasis cases Thursday, an increase of more than 1,400 in one week, with Wayne and Oakland counties recording the largest totals and two outbreak-associated deaths previously reported.

By yourNEWS Media Newsroom

Michigan’s cyclosporiasis outbreak has climbed to 13,909 cases, state health officials reported Thursday, adding more than 1,400 cases since the previous update just one week earlier.

The sharp increase makes Michigan the state hardest hit by the outbreak, with the largest concentrations of cases reported in Wayne and Oakland counties.

Wayne County has recorded 1,794 cases, the highest total in the state, while neighboring Oakland County has reported 1,344.

Michigan officials said infections have been most prevalent among people ages 40 to 49.

The latest figures follow the state’s Aug. 6 update and show the outbreak continuing to expand rapidly.

Michigan officials reported two deaths associated with the outbreak last week. Both people who died had significant underlying health conditions, according to state officials.

The Centers for Disease Control and Prevention separately reported 13,895 laboratory-confirmed cyclosporiasis cases across 47 states as of Aug. 11.

Michigan’s Thursday total of 13,909 is slightly higher than the CDC’s previously published nationwide count because the figures reflect updates issued on different dates, with the federal count current through Aug. 11 and Michigan releasing newer state data Thursday.

Cyclosporiasis is an intestinal illness caused by infection with the microscopic parasite Cyclospora cayetanensis.

The latest Michigan report underscores the scale of the outbreak in the state, where more than 13,900 cases have now been identified and the weekly increase alone exceeded 1,400 infections.

Wayne and Oakland counties together account for more than 3,100 of Michigan’s reported cases, while adults in their 40s have emerged as the age group with the highest prevalence.

With cases documented in 47 states nationally and Michigan continuing to report substantial increases, health officials remain focused on tracking the outbreak as updated laboratory-confirmed case counts become available.