Document Detail

Epidemiology of foodborne Norovirus outbreak in Incheon, Korea.
MedLine Citation:
PMID:  20676321     Owner:  NLM     Status:  MEDLINE    
On June 14, 2008, an outbreak of gastroenteritis occurred among elementary school students in Incheon. We conducted an investigation to identify the source and described the extent of the outbreak. We performed a retrospective cohort study among students, teachers and food handlers exposed to canteen food in the elementary school. Using self-administered questionnaires we collected information on symptoms, days of canteen food eaten, food items consumed. Stool samples were collected from 131 symptomatic people and 11 food handlers. The catering kitchen was inspected and food samples were taken. Of the 1,560 people who ate canteen food, 117 were symptomatic cases, and the attack rate was 7.5%. Consumption of cucumber-crown daisy salad (RR=2.71), fresh cabbage mix (RR=2.23), dried radish salad (RR=3.04) and young radish kimchi (RR=2.52) were associated with illness. Sixty-four (45%) of the 142 stool specimens were positive for Norovirus. Norovirus was detected in 2 food handlers. Interviews with kitchen staff indicated the likelihood of contamination from an infected food handler to the dried radish salad during food processing. The excretion of Norovirus from asymptomatic food handlers may be an infection source of Norovirus outbreaks.
Jun-Hwan Yu; Na-Yeon Kim; Yeon-Ja Koh; Hun-Jae Lee
Publication Detail:
Type:  Journal Article     Date:  2010-07-21
Journal Detail:
Title:  Journal of Korean medical science     Volume:  25     ISSN:  1598-6357     ISO Abbreviation:  J. Korean Med. Sci.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-02     Completed Date:  2010-11-24     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  8703518     Medline TA:  J Korean Med Sci     Country:  Korea (South)    
Other Details:
Languages:  eng     Pagination:  1128-33     Citation Subset:  IM    
Department of Gastroenterology, Ajou University School of Medicine, Suwon, Korea.
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MeSH Terms
Caliciviridae Infections / epidemiology*
Cohort Studies
Disease Outbreaks*
Food Contamination
Foodborne Diseases / epidemiology*
Gastroenteritis / epidemiology*
Norovirus / classification*,  genetics
Republic of Korea / epidemiology
Retrospective Studies

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