How Worried Should You Be About Cyclospora?

AdvertisementSKIP ADVERTISEMENTYou have a preview view of this article while we are checking your access. When we have confirmed access, the full article content will load.Guest EssayHow Freaked Out Should You Be About the Nightmare Stomach Bug?July 15, 2026, 1:29 p.m. ETCredit...Thomas Nondh Jansen/Connected ArchivesListen · 6:06 min By Emily OsterDr. Oster is the founder and chief executive of ParentData, an information platform that helps parents think about risk.In a summer already characterized by extreme heat and a surplus of ticks, we didn’t need an outbreak of a nightmare stomach bug. But here we are, with the highest ever count of cyclosporiasis cases in a season. It’s an illness caused by consuming the eggs of the microscopic Cyclospora parasite, usually as a result of contaminat