The unprecedented cyclospora outbreak has now expanded to include 15 states as federal health officials report more than 10,000 confirmed cases.
This summer — a season known for its fresh salads and ripe fruit — had been marred by an explosive diarrhea-inducing parasite found in food or water contaminated with feces. As officials struggle to determine the exact cause of the outbreak, which started in May, the list of affected states has grown.