Enteric Viruses in a Large Waterborne Outbreak of Acute Gastroenteritis in Finland |
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Authors: | L Maunula P Klemola A Kauppinen K Söderberg T Nguyen T Pitkänen S Kaijalainen M L Simonen I T Miettinen M Lappalainen J Laine R Vuento M Kuusi M Roivainen |
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Institution: | (1) Department of Food and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland;(2) National Public Health Institute, Kuopio, Finland;(3) Laboratory Division (HUSLAB), Department of Virology, Helsinki University Central Hospital, Helsinki, Finland;(4) Tampere University Hospital, Tampere, Finland;(5) Centre for Laboratory Medicine, Tampere University Hospital, Tampere, Finland |
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Abstract: | In Nokia city about 450,000 l of treated sewage water was for 2 days allowed to run into the drinking water supplies of the
city due to a personal error of one employee. Within the next 5 weeks about 1,000 people sought care at the municipal health
centre or regional hospital because of gastroenteritis. Here we report the results of viral analyses performed by gene amplification
assays from the earliest water and sewage samples as well as from close to 300 patient samples. The contaminating treated
sewage was shown to harbour several enteric viruses known to cause acute gastroenteritis. Likewise, the drinking water sample
was positive for noro-, astro-, rota-, entero- and adenoviruses. Noroviruses were also found in 29.8% of stool samples from
affected patients, while astro-, adeno-, rota- and enteroviruses were detected in 19.7, 18.2, 7.5 and 3.7% of the specimens,
respectively.
An erratum to this article can be found at |
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Keywords: | RT-PCR Real-time RT-PCR Enteric viruses Norovirus Astrovirus Rotavirus Enterovirus Adenovirus Hepatitis A virus Waterborne outbreak |
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