Properly labeled romaine grown outside those three counties and harvested after November 23, as well as romaine grown in greenhouses or hydroponically, should all be safe from contamination, the CDC said. The earlier warning against eating romaine from California's San Luis Obispo, Santa Cruz and Ventura counties has been lifted.
https://www.cnn.com/2018/12/13/health/romaine-lettuce-e-coli-outbreak-source-bn/index.html
