A large-scale gastroenteritis outbreak associated with <em>Norovirus</em> in nursing homes

Volume 133
Issue 01 - Feb 2005
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A large-scale gastroenteritis outbreak associated with Norovirus in nursing homes

R. CALDERON-MARGALIT, R. SHEFFER, T. HALPERIN, N. ORR, D. COHEN and T. SHOHAT (2005).
Epidemiology and Infection, Volume 133, Issue 01, February 2005 pp 35-40 http://journals.cambridge.org/action/displayAbstract?aid=276020

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Epidemiology and Infection (2005), 133 : 35-40 Cambridge University Press

Copyright © 2004 Cambridge University Press

doi:10.1017/S0950268804003115 (About doi)

Published online by Cambridge University Press 04 Oct 2004

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Epidemiology and Infection (2005), 133:1:35-40 Cambridge University Press
Copyright © 2004 Cambridge University Press
doi:10.1017/S0950268804003115

A large-scale gastroenteritis outbreak associated with Norovirus in nursing homes

R. CALDERON-MARGALIT ^a1^c1, R. SHEFFER ^a2, T. HALPERIN ^a3, N. ORR ^a3, D. COHEN ^a3^a4 and T. SHOHAT ^a2^a4
^a1 Hadassah Braun School of Public Health, Hebrew University, Jerusalem, Israel
^a2 Tel-Aviv District Authority, Israel Ministry of Health, Israel
^a3 Center for Vaccine Development and Evaluation, Israel Defense Forces, Israel
^a4 Department of Epidemiology and Biostatistics, Tel-Aviv University, Israel

Article author query

calderon-margalit r [PubMed] [Google Scholar]

sheffer r [PubMed] [Google Scholar]

halperin t [PubMed] [Google Scholar]

orr n [PubMed] [Google Scholar]

cohen d [PubMed] [Google Scholar]

shohat t [PubMed] [Google Scholar]

Abstract

An increase in gastroenteritis outbreaks due to Norovirus has been reported worldwide. We investigated a large-scale outbreak affecting 246 residents and 33 staff members in six nursing homes in the Tel-Aviv district, Israel, during 3 weeks in 2002. Person-to-person spread was noticed in all nursing homes. The spread of disease could not be attributed to social interactions. Among the elderly residents, the hospitalization rate was 10·2% and the case-fatality rate was 2·0%. Bacteriological cultures were negative. Overall, 7 out of 15 stool specimens were positive for Norovirus by RT–PCR. All were sequenced and found to be 90% identical. The characteristics of this outbreak and the RT–PCR results suggest that illness was caused by Norovirus. Due to the high case-fatality rate of Norovirus gastroenteritis, there should be a high index of suspicion when encountering a gastroenteritis outbreak among the elderly. This will enable prompt action to stop the spread of illness.

(Accepted August 14 2004)

Correspondence:
^c1 Dr R. Calderon-Margalit, Hebrew University–Hadassah Braun School of Public Health, PO Box 12272, Jerusalem, 91120, Israel. (Email: ronitca@hadassah.org.il)