TY - 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 SN - / UR - http://hdl.handle.net/10138/338636 T3 - A1 - Polkowska, Aleksandra; Räsänen, Sirpa; Nuorti, Pekka; Maunula, Leena; Jalava, Katri A2 - PB - 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 ... VO - IS - SP - OP - 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 N1 - PP - ER -