A Widespread Outbreak of<i>Yersinia pseudotuberculosis</i>O:3 Infection from Iceberg Lettuce

Abstract

Iceberg lettuce was implicated as the vehicle of a widespread foodborne Y. pseudotuberculosis outbreak. Ongoing laboratory-based surveillance and serotype analysis were essential in the rapid detection of infection. Cases of yersiniosis, which appear to be sporadic, may be part of unrecognized outbreaks caused by contaminated fresh produce.