In July 2025, the FDA made cyclospora tracking optional from FoodNet, removing the parasite from its mandatory surveillance list. Federal investigators say the cyclospora parasite behind the suspected illnesses of thousands of Americans has been unusually difficult to trace. With the publicity that has been generated by the recent outbreak of cyclospora, experts say more people are likely seeking out testing. The backstory:In July 2025, the FDA made cyclospora tracking optional, removing the parasite from its mandatory surveillance list. Public health experts say the cuts limited the federal government’s ability to quickly analyze trends and spot early signs of widespread cyclospora outbreaks.