Cyclospora outbreak in US: Over 1,500 cases reported in Michigan alone

Published Jul 11, 11:20 AM UTC

A significant outbreak of the microscopic parasite Cyclospora cayetanensis is spreading across the United States, with over 1,500 cases reported in Michigan alone—far exceeding the typical annual average of 50. The CDC reports infections in 31 states, with New York identifying 470 cases since May 1. The parasite, transmitted via fecally contaminated food or water, causes watery and explosive diarrhea that can last from days to over a month if untreated. Fresh produce such as raspberries, basil, and salads are suspected sources. While rarely fatal, the infection can lead to severe dehydration. The source of the current outbreak remains under investigation, and case numbers are above seasonal norms.

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