The FDA is investigating at least four active cyclospora outbreak clusters, including one linked to 72 illnesses, while the CDC reports 4,173 confirmed domestically acquired cases nationwide since May 1 along with more than 7,400 additional reported infections under review. Traceback efforts continue on clusters without identified sources, and a prior link to Taylor Farms iceberg lettuce was retracted after a false positive. Cases have risen in Midwest states including Michigan, Ohio, and Kansas.