Document Detail

Acute gastroenteritis outbreaks in Catalonia, Spain: norovirus versus Salmonella.
MedLine Citation:
PMID:  18415749     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To describe the epidemiology of norovirus (NV) and Salmonella gastroenteritis outbreaks in Catalonia between 15 October 2004 and 30 October 2005. MATERIAL AND METHODS: Epidemiological data were obtained from outbreak reports. The aetiologic agent was investigated by culture for enteric bacteria, enzyme immunoanalyses, reverse transcription polymerase chain reaction (RT-PCR) and molecular epidemiology genotyping for NV. The chi(2) test was used to compare proportions. Incidence rates and their confidence intervals (CI) were calculated assuming a Poisson distribution. RESULTS: A total of 225 acute gastroenteritis (AG) outbreaks were reported, with 3436 persons affected and 115 hospitalized. Sixty outbreaks (27%) accounting for 1791 cases (52%) were caused by NV, with an attack rate (AR) of 34.7% and a hospitalization rate (HR) of 0.2%. Seventy- four outbreaks (33%) were caused by Salmonella spp., affecting 646 persons (18.8% (AR 45.6% and HR 13.7%)). The difference in AR between Salmonella spp. and NV was statistically significant (odds ratio (OR) 1.57; 95% CI: 1.39-1.78; p < 0.001). The median number of affected persons per outbreak was 3-fold higher for NV (15 (2-174)) than for Salmonella (5 (2-44)). The incidence rate of AG cases associated with NV outbreaks was significantly higher (24.9 per 100,000 persons/year (95% CI: 23.7-26.1)) than for those associated with Salmonella (5(2-44)) outbreaks (9.2 per 100,000 persons/year (95% CI: 8.5-9.9)). CONCLUSIONS: The disease burden and impact of NV highlight the importance of timely notification and investigation of outbreaks and the development and implementation of preventive measures, such as health and safety education for caregivers and food handlers in order to reduce the incidence of infections.
Núria Torner; Angela Domínguez; Laura Ruíz; Anna Martinez; Rosa Bartolomé; Javier Buesa; M Dolors Ferrer;
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Scandinavian journal of gastroenterology     Volume:  43     ISSN:  1502-7708     ISO Abbreviation:  Scand. J. Gastroenterol.     Publication Date:  2008  
Date Detail:
Created Date:  2008-04-16     Completed Date:  2008-06-11     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0060105     Medline TA:  Scand J Gastroenterol     Country:  Norway    
Other Details:
Languages:  eng     Pagination:  567-73     Citation Subset:  IM    
CIBER Epidemiology and Public Health, Barcelona, Spain.
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MeSH Terms
Acute Disease
Caliciviridae Infections / epidemiology*,  transmission
Disease Outbreaks*
Foodborne Diseases / epidemiology
Gastroenteritis / epidemiology*,  microbiology,  virology
Salmonella Food Poisoning / epidemiology*,  transmission
Spain / epidemiology
Glòria Carmona / ; Neus Cardeñosa / ; Maria Rosa Sala / ; Josep Alvarez / ; Irene Barrabeig / ; Ariadna Rovira / ; Ignasi Parrón / ; Caritat Planas / ; Cesar Arias / ; Neus Camps / ; Nuria Fullia / ; Maria Asunción / ; Pere Godoy / ; Miquel Alseda / ; Joan Torres / ; Antoni Artigues / ; Sofia Minguell / ; Pilar Jorgina Balaña / ; Analía Pumarés / ; Mercedes de Simón / ; Rosa Maria Pintó / ; Alberto Bosch / ; Codina Gemma / ; Jesús Rodríguez / ; Rebeca Montava /

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