New Delhi, July 15 -- More than 30 states in the US have reported cases of Cyclosporiasis, with close to 5,000 cases nationwide so far. Michigan has been the worst-hit, with more than 3,300 cases reported since late May.

According to the Associated Press, the current cyclospora outbreak is already the nation's worst year for reported cases. The previous record was around 4,700 reported cases in 2019.

What makes the outbreak concerning is the fact that health officials have not yet definitively identified what is causing the infections. In Michigan, officials say early information points to lettuce or salad greens as a possible culprit.

According to the US FDA, Cyclospora cayetanensis is a parasite that is so small it can only be seen u...