CDC warns of rising parasite infections with a horrifying symptom: 2026 cyclosporiasis outbreak spreads

Health officials are warning Americans about the illness that’s caused ‘explosive’ diarrhea in hundreds of cases this year, across over a dozen states. Here’s something you don’t see everyday: Local health officials are warning Americans to be on the lookout for cyclosporiasis, a parasitic infection that causes “explosive” diarrhea—yes, we said it—and has sickened nearly 700 people in the at least two U.S. states, with a majority of those cases in Michigan.