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Virus surveillance in wastewater from SLU-SEEC

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The data presented in this dashboard originate from the Swedish University of Agricultural Sciences (SLU) and the Swedish Environmental Epidemiology Centre (SEEC). The monitoring includes detection and quantification of generic material from influenza A virus, influenza B virus, respiratory syncytial virus (RSV) and SARS CoV-2 in untreated wastewater. We thank all participating wastewater treatment plants for their invaluable efforts in collecting samples and associated data. For more information kindly visit methodology page.

Recent data summary
Latest data sampling date
2025-08-11
Latest data sampling sites
Gavle, Jonkoping, Kalmar, Linkoping, Lulea, Malmo, Orebro, Ostersund, Stockholm-Bromma, Stockholm-Grodinge, Stockholm-Henriksdal, Stockholm-Kappala, Umea, Uppsala and Vasteras. Collectively, these sites represent 33% of Sweden's population.
Comments from research group
To be implemented
Sample summary
Target Analysed Positive Valid
Influenza A virus 15 1 14
Influenza B virus 15 0 14
SARS CoV-2 15 14 14
Quantitative overview

The figure shows measured virus levels in wastewater from 2024 and onwards. Each dot represents the population-weighted weekly mean across the selected plants. The lines show rolling averages, also weighted by the population served by each plant. You can select the years, months, time-series window (for rolling average) and wastewater treatment plants from the below filter section.

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Plot Filters

Use the filters below to update the above plot.

Years
Months
Normalisation method
Time series display
Sampling sites
All None
Qualitative overview

The figure displays the status of each individual sample, categorised as positive, negative, or invalid. Empty cells indicate missing samples.