Lettuce-linked parasitic outbreak spreads. See map, more updates - USA Today

A cyclosporiasis outbreak linked to recalled iceberg lettuce has spread to two additional states since early August, according to the CDC, in what officials describe as an unprecedented wave of infections beginning in May.
Between May 1 and Aug. 10, the CDC identified 13,895 laboratory-confirmed cases across 47 states, with at least 10,455 more cases still awaiting laboratory confirmation.
The parasitic illness, caused by Cyclospora cayetanensis and typically spread through contaminated food or water, produces gastrointestinal symptoms like diarrhea, nausea and vomiting, and can pose more serious risks to people with weakened immune systems.
Ohio and Michigan have reported the most cases, with Michigan's health department citing 13,909 cases as of Aug. 13, including the outbreak's first two identified deaths.
The largest cluster was traced by the FDA to recalled iceberg lettuce grown by Taylor Farms in central Mexico; the lettuce-related outbreak has grown to include Maine and Massachusetts, expanding beyond the previously identified 15 states such as Illinois, Ohio and Michigan.
Confirmed cases tied specifically to the lettuce outbreak rose to at least 9,481, up from 6,358 on Aug. 5, and FDA enforcement reports revealed the contaminated lettuce reached more retailers than initially publicized, contrary to early attention focused on Taco Bell.