Sixteen individuals have been hospitalized, and one individual suffered from hemolytic uremic syndrome (HUS), which can cause kidney failure. No deaths have been reported, according to CDC.

Preliminary traceback information indicates the affected romaine was harvested in the Central Coast growing regions of northern and central California including San Benito, San Luis Obispo, Santa Barbara, Santa Cruz and Ventura counties. At this time, no common grower, supplier, distributor, or brand of romaine lettuce has been identified. Romaine grown outside those regions, as well as lettuce grown hydroponically or in greenhouses, is most likely not affected and safe to consume.

Based on discussions with major producers and distributors, FDA announced a new voluntary leafy greens industry labeling plan where romaine lettuce entering the market will now be labeled with a harvest location and harvest date. Romaine lettuce entering the market also can be labeled as being hydroponically or greenhouse grown. The agency is advising consumers to avoid eating romaine that is not labeled or is harvested from the Central Coast of California.