Lettuce eyed as source of cyclospora outbreak sickening thousands across 31 states

Lettuce or salad greens are emerging as a likely source of a cyclosporiasis outbreak affecting 31 states, with Michigan reporting the highest number of cases. The CDC has confirmed 843 cases, but state officials report significantly higher numbers, including 2,640 cases in Michigan. Symptoms include diarrhea, nausea, and stomach cramps, and the parasite is resistant to routine chemical disinfection.