Based on new information, the Food and Drug Administration (FDA) have narrowed their warning to consumers. (Initial warning issued November 20.)
Consumers, retailers, and restaurants should not serve romaine lettuce from the Central Coast growing regions of northern and central California. If the romaine lettuce is not labeled with a harvest growing region and harvest date, do not buy, serve, sell, or eat it. If you are unable to determine the source of your romaine lettuce, the product should be thrown away.
Romaine lettuce that was harvested outside of the Central Coast growing regions of northern and central California does not appear to be related to the current outbreak. Hydroponically and greenhouse-grown romaine also does not appear to be related to the current outbreak. There is no recommendation for consumers or retailers to avoid using romaine harvested from these sources.
FDA recommends consumers should always practice safe food handling and preparation measures. It is recommended that they wash hands, utensils, and surfaces with hot, soapy water before and after handling food.