Results: During 2007e2012, a total of 1794 FBDOs and 48,897 patients were reported.
After 2007, FBDOs and patient numbers steadily decreased over the next
2 years and then plateaued until 2011. However, in 2012, FBDOs increased
slightly accompanied by a large increase in the number of affected patients. Our
results highlight the emergence of norovirus and pathogenic Escherichia coli
other than enterohemorrhagic E. coli (EHEC) in schools in 2012. We found that
pickled vegetables is an emerging causal vehicle responsible for this problem.
Conclusion: On the basis of this study we recommend intensified inspections of
pickled vegetable manufacturers and the strengthening of laboratory surveillance
of relevant pathogens.