Taylor Farms is recalling iceberg lettuce in 27 states because of the potential that the greens could be contaminated with cyclosporiasis.

Nearly 7,000 cases nationwide are confirmed or under investigation, according to the CDC. Michigan has accounted for the bulk of cases so far.

Taylor Farms, headquartered in Salinas, California, stands as one of the nation’s largest producers of fresh-cut vegetables, bagged salads.