More than 1,200 Cyclospora infections have now been reported in Michigan alone as health officials investigate outbreaks across several US states. Yet despite hundreds of patient interviews and ongoing food safety investigations, authorities have not identified a single source linking every case.
Experts say the delay is not unusual. Unlike bacteria such as Salmonella or Escherichia coli (E. coli), Cyclospora is a microscopic parasite whose biology makes outbreaks significantly harder to trace. Investigators often have to reconstruct meals eaten weeks earlier while examining multiple food supply chains before identifying a likely source.
