Shredded iceberg lettuce from Mexico, supplied by Taylor Farms to Taco Bell (and possibly other vendors), is the likely culprit in the outbreak in MI, OH, IN, KY, and WV. Meanwhile, terrible air quality from wildfires is affecting the Midwest and Northeast.

MI has over 3,300 cases, with 669 new yesterday - and they’re zeroing in on lettuce and salad greens as a potential culprit in the massive outbreak.