In the wake of an E. coli outbreak tied to romaine, numerous consumer groups are calling for the FDA to mandate more stringent traceability measures for companies that handle leafy greens and other “high-risk” food.

The Food and Drug Administration is urging the produce industry and various organizations studying how E. coli came into contact with romaine grown in Yuma, Ariz., to continue working with the agency on the issue.

Federal agencies are asking romaine lettuce shippers to stop packing and selling their product as a second E. coli outbreak traced to the lettuce is under investigation.

Industry associations have responded to an E. coli outbreak linked to romaine, asking growers and shippers to “make a hard, convincing and clean break” until the outbreak is declared over.

The Food and Drug Administration continues to investigate an E. coli outbreak linked to romaine lettuce grown in California’s Central Coast region.

The Canadian Food Inspection Agency has added to the number of cases of E. coli linked to romaine lettuce in that country.