https://ift.tt/2wwdHAe Officials Identify a Source in the Romaine Lettuce E. Coli Outbreak Food Contamination and Poisoning, Lettuce, Bacteria Samples of canal water in the Yuma area of Arizona were found to contain the same genetic strain of E. coli that caused the outbreak, but how it got there is unclear. JULIA JACOBS https://ift.tt/2tS1K3t July 1, 2018 at 05:30AM