CORONASTEP Report 104 (Week 45) SARS-CoV-2 Sewage Surveillance in Luxembourg

This report 104 presents the results of SARS-CoV-2 contamination of wastewater at the entrance of the 13 wastewater treatment plants (WWTPs) analysed during the week 45 of 2021. The WWTPs of Uebersyren, Hespérange and Boevange were analysed only once this week.

The SARS-CoV-2 RNA flux measured in WWTPs this week continue to show a high national prevalence of the virus, with a SARS-CoV-2 flux between 8 and 10 x 1011 RNA copies per day per 100,000 equivalent-inhabitants. This week's results show a slight increase in the flow of SARS-CoV-2, with a return to a level similar to that observed a fortnight ago. The general trend over several weeks or even months is clearly upwards. However, this increase is rather slow and progressive compared to previous waves.

A general upward trend is also observed at regional level for most of the analysed wastewater treatment plants. This shows that this increase is present on a national scale, without regional disparities

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