Taco Bell has removed lettuce supplied by Taylor Farms from menus in affected states following a cyclosporiasis outbreak traced to iceberg lettuce. Michigan has reported the highest number of cases, exceeding 3,300, with federal and state investigators linking the parasite to the supplier. Disputed CDC case totals range from 1,645 to 7,000 across sources, while this year's figures are reported as six times higher than last year.