CDC and the Food and Drug Administration (FDA) are now advising that U.S. consumers not eat and retailers and restaurants not serve or sell any romaine lettuce from the Central Coastal growing regions of northern and central California. This updated recommendation comes as CDC, FDA, health officials in several states, and Canada continue to investigate a multistate outbreak of Shiga toxin-producing E. coli O157:H7 illnesses linked to romaine lettuce.