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Concentration of SARS CoV-2 in sewage shows a descending trend

Since February 2020, we have measured the SARS -CoV-2 RNA in sewage water. By correcting the results for the number of inhabitants, we can provide an objective picture of the prevalence of the Covid virus among the population.

In the most recent graphs for the cities of Utrecht and Amsterdam, we see that the concentration of SARS-CoV-2 RNA is decreasing. As we can detect the virus approximately 6 days earlier in the sewage water (before people feel sick and get tested) these results can have a predictive value.

The corrected SARS-CoV-2 concentration in wastewater (orange), the number of infections reported to the Municipal Health Authority (blue), and the number of hospitalizations (grey) in Amsterdam

The corrected SARS-CoV-2 concentration in wastewater (orange), the number of infections reported to the Municipal Health Authority (blue), and the number of hospitalizations (grey) in Utrecht

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