Outbreak of gastroenteritis caused by norovirus GII.4 Sydney variant after a wedding reception at a resort/activity centre, Finland, August 2012.
In August 2012, an outbreak of gastroenteritis occurred among 88 persons attending a wedding reception at a resort/activity centre in Ylöjärvi, Finland. Of 39 interviewed guests, 23 met the case definition. Two persons were hospitalized. Epidemiological, laboratory and environmental investigations were conducted to characterize the outbreak and to recommend control measures. Investigation confirmed the presence of a new strain of norovirus GII.4 Sydney variant in stool specimens obtained from two wedding guests and on several environmental surfaces in the centre. In the questionnaire study, none of the foods or beverages served during the reception were significantly associated with the illness. Additional cases of gastroenteritis that occurred at the centre before and after the wedding reception supported the hypothesis of environmental transmission of norovirus. After thorough cleansing and disinfection and 1 week's quarantine, no new cases with symptoms typical for norovirus infection were identified at the centre.
National Institute for Health and Welfare (THL),Department of Infectious Disease Surveillance and Control, Helsinki,Finland.
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Polkowska
Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine,University of Helsinki,Helsinki,Finland.
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Rönnqvist
Environmental Health Care Unit Pirteva,Pirkkala,Finland.
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Lepistö
National Institute for Health and Welfare (THL),Department of Infectious Disease Surveillance and Control, Helsinki,Finland.
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Roivainen
Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine,University of Helsinki,Helsinki,Finland.
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Maunula
National Institute for Health and Welfare (THL),Department of Infectious Disease Surveillance and Control, Helsinki,Finland.
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Huusko
National Institute for Health and Welfare (THL),Department of Infectious Disease Surveillance and Control, Helsinki,Finland.
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Toikkanen
National Institute for Health and Welfare (THL),Department of Infectious Disease Surveillance and Control, Helsinki,Finland.
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Rimhanen-Finne
D000328:Adult; D000368:Aged; D017250:Caliciviridae Infections / Q000453:epidemiology / Q000821:virology*; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D005260:Female; D005387:Finland / Q000453:epidemiology; D005517:Foodborne Diseases / Q000453:epidemiology / Q000209:etiology / Q000821:virology; D005759:Gastroenteritis / Q000453:epidemiology / Q000821:virology*; D014644:Genetic Variation; D006801:Humans; D008297:Male; D008875:Middle Aged; D029322:Norovirus / Q000145:classification* / Q000302:isolation & purification; D011633:Public Facilities