Michigan, Ohio and several other U.S. states are experiencing an uptick in a stomach illness that can result in 'explosive' diarrhea.

Some states report higher numbers of cases than usual for this time of year

Cases of cyclosporiasis, which causes explosive diarrhea and other food poisoning symptoms, have topped 1,000. See which states have the most.

In neighboring Ohio, cases have reportedly reached over 500.

A "large and growing outbreak"