As cyclospora illnesses surge to a record, Michigan officials eye lettuce as a possible cause

Infections from cyclospora, a diarrhea-causing parasite, are surging in 2026, with over 3,300 cases reported in Michigan and lettuce or salad greens suspected as a possible source. Health officials advise avoiding bagged lettuce and washing whole heads, while Taco Bell has temporarily removed ingredients as a precaution.