The Centers for Disease Control and Prevention have linked at least 23 confirmed cases of E. coli with Romaine lettuce grown at a farm in Arizona. Distributors Freshway Foods and Vaughan Foods have recalled bagged lettuce that could be traced back to that farm. The outbreak has been linked with companies that distribute to food service and wholesale buyers.

No deaths have been reported, but some experts speculate that the number of confirmed E. coli cases would be higher if more labs were capable of testing for that particular strain of the bacteria. Symptoms include abdominal cramps and diarrhea among other things, but 12 of the confirmed cases were severe enough to cause kidney failure in the patient. The product recall includes Romaine lettuce with a use-by date of May 12 or earlier.