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T1  - Assessment of Food and Waterborne Viral Outbreaks by Using Field Epidemiologic, Modern Laboratory and Statistical Methods : Lessons Learnt from Seven Major Norovirus Outbreaks in Finland 
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UR  - http://hdl.handle.net/10138/338636 
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A1  - Polkowska, Aleksandra; Räsänen, Sirpa; Nuorti, Pekka; Maunula, Leena; Jalava, Katri 
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Y1  - 2021 
LA  - eng 
AB  - Seven major food- and waterborne norovirus outbreaks in Western Finland during 2014-2018 were re-analysed. The aim was to assess the effectiveness of outbreak investigation tools and evaluate the Kaplan criteria. We summarised epidemiological and microbiological findings from seven outbreaks. To evaluate the Kaplan criteria, a one-stage meta-analysis of data from seven cohort studies was performed. The case was defined as a person attending an implicated function with diarrhoea, vomiting or two ... 
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KW  - 11832 Microbiology and virology; norovirus; statistics; mathematics; disease outbreaks; cohort studies; fresh produce; Finland; FOODBORNE OUTBREAKS; FRESH PRODUCE; UNITED-STATES; RT-PCR; TRANSMISSION; GASTROENTERITIS; INFECTIONS; CRITERIA; HEALTH; IMPACT 
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