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> Accueil > Actualités > Novembre 2020 > CORONASTEP Report 21 SARS-CoV-2 Sewage Surveillance in Luxembourg

CORONASTEP Report 21 SARS-CoV-2 Sewage Surveillance in Luxembourg

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This document 21 presents the results of SARS-CoV-2 contamination of wastewater at the inlet of wastewater treatment plants (WWTPs) for week 45. Three separate sampling days, Monday, Wednesday and Friday, were analysed during this week, with eight, eleven and nine wastewater samples respectively. Most of the WWTPs were therefore analysed two or three times, with the exception of Hespérange and Boevange-sur-Attert.
During week 45, the SARS-CoV-2 RNA flows in the treatment plants were very comparable to those observed during week 44. The level of contamination remains in the thirteen treatment plants analysed at high values of CoV-2-SARS fluxes, indicating a still very high prevalence of the virus in wastewater (Figures 1a and 1b). However, all the data collected this week seem to indicate a slight downward trend, although it remains very low. This trend will have to be confirmed in the coming days or weeks.
More precisely during the week 45, a slight decay occurred at the level of the wastewater treatment plants of Beggen, Schifflange, Pétange, Mersch, Bleesbruck and Troisvierges, while an increase was noticed for the wastewater treatment plants of Wiltz and Bettembourg. For the WWTP of Echternach, Grevenmacher, Uebersyren, a first decay was finally observed in Friday after increases on Monday and Wednesday and. It is more difficult to get a clear trend for Hespérange and Boevange-sur-Attert because only one sample was taken at the beginning of this week (Monday).

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Previous reports and more information can be found on the website of LIST.

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