Short- and long-term variations of norovirus concentrations in the Meuse river during a 2-year study period.
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Authors
Westrell, ThereseTeunis, Peter F M
Berg, Harold H J L van den
Lodder, Willemijn J
Ketelaars, Henk
Stenström, Thor Axel
Roda Husman, Ana Maria de
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ArticleLanguage
en
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Short- and long-term variations of norovirus concentrations in the Meuse river during a 2-year study period.Publiekssamenvatting
Faecally impacted surface waters used for drinking water production may encompass risk for norovirus infections. To be able to assess a possible health risk, noroviruses should be quantified and fluctuations identified. In 2001, norovirus concentrations in the river Meuse displayed a seasonal distribution with high peaks during wintertime as determined by RT-PCR on serially diluted RNA. An intensified day-by-day sampling scheme in the winter of 2002/2003 revealed that the winter peak consisted of several peaks of varying duration and magnitude, possibly due to contamination events in the catchment. The highest estimated concentration was 1700 PCR-detectable units per litre (95% CI 250-8000), which if coinciding with failing treatment could lead to significant numbers in drinking water. Adaptive dynamic filtering was shown to adequately predict subsequent sample concentrations. If valid, such analyses could prove to be useful as early warning systems in risk management of water sources.PMID
16839583ae974a485f413a2113503eed53cd6c53
10.1016/j.watres.2006.05.019
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