E. coli potential contamination causes CDC and FDA to recommend not eating romaine lettuce

According to a CDC statement, “Information collected to date indicates that chopped romaine lettuce from the Yuma, Arizona growing region could be contaminated with E. coli O157:H7 and could make people sick.” “Consumers anywhere in the United States who have store-bought chopped romaine lettuce at home, including salads and salad mixes containing chopped romaine lettuce, should not eat it and should throw it away, even if some of it was eaten and no one has gotten sick,” the CDC advised. “If you do not know if the lettuce is romaine, do not eat it and throw it away.” @ https://www.cdc.gov/ecoli/2018/o157h7-04-18/index.html. Did this recommendation go too far?