Record U.S. Cyclosporiasis Outbreak is Over, CDC Says

The largest U.S. outbreak of cyclosporiasis has ended after sickening 12,833 people across 21 states, marking the biggest cluster of the foodborne illness on record.

Overall, the 2026 season reached 19,595 cases and included two deaths, both in Michigan, the outbreak’s epicenter. Health officials linked the outbreak to shredded iceberg lettuce supplied by Taylor Farms in Mexico, which was recalled in July.

The parasite’s weeks-long incubation period complicated efforts to identify the source before implicated produce spoiled. The outbreak highlights challenges in tracing foodborne illness and the importance of timely food-safety investigations and coordinated response. Read more from CNBC here.