Michigan sees nearly 1,000 cyclospora cases, the state's largest outbreak and among the nation's biggest

Nearly a thousand residents of Michigan have been diagnosed with a cyclospora infection that causes prolonged watery diarrhea, making it the biggest outbreak in the state's history and one of the largest in the United States in recent years.

The Michigan health department reported 992 cases and about 40 hospitalizations, while neighboring Ohio counties have logged several hundred additional infections. No fatalities have been recorded, and investigators have not yet identified the source of the contamination.

State health officials say the pattern points to a linked outbreak, but pinpointing the food or water source is challenging, a common issue with cyclospora surges.