CDC is advising consumers, restaurants, and retailers not to eat, serve, or sell any romaine lettuce as it investigates an outbreak of E. coli O157:H7 infections linked to romaine.  Read the investigation announcement:https://www.cdc.gov/ecoli/2018/o157h7-11-18/index.html.Key Points:CDC, public health and regulatory officials in several states and Canada, and the U.S. Food and Drug Administration are investigating a multistate outbreak of E. coli O157:H7 infections. Thirty-two...