Yersinia enterocolitica outbreak associated with ready-to-eat salad mix, Norway, 2011.

ABSTRACT

In 2011, an outbreak of illness caused by Yersinia enterocolitica O9 in Norway was linked to ready-to-eat salad mix, an unusual vehicle for this pathogen. The outbreak illustrates the need to characterize isolates of this organism, and reinforces the need for international traceback mechanisms for fresh produce.