A northwestern US region in Ohio, bordering Lake Erie, Michigan, and Indiana.
The cycleospora outbreak has grown, with Michigan reporting nearly 1,000 cases and Ohio, New York, and other states seeing rising counts. The illness causes watery diarrhea and can last weeks; health departments are investigating potential foodborne sources and urging safe handling.
The U.S. outbreak of cyclosporiasis has expanded across multiple states, with Michigan reporting the highest counts. Officials say the source remains unidentified, but lettuce and leafy greens are under investigation amid recalls and ongoing traceback work as case counts rise through summer.