Wastewater Monitoring Results for 2026-03-29

March 31, 2026

Wastewater monitoring offers an early indicator of community respiratory virus activity by detecting viral genetic material shed by infected individuals, which helps public health officials track trends regardless of clinical testing rates. Current measurements, such as RSV RNA levels, should be compared to historical averages to assess whether virus presence is typical or unusual for the season.

Photo: CDC, woman-holding-laboratory-appratus, on Unsplash.com, licensed under Unsplash License.

Wastewater monitoring provides an early indicator of respiratory virus activity in the community. When people are infected, they shed viral genetic material in their feces and urine. This means wastewater can show trends in infections even when clinical testing rates change. Tracking these levels helps public health officials understand virus circulation and support preparedness.

The most recent measurement shows RSV RNA at 29.6 gene copies per liter of wastewater. This level is based on a concentration of 11,840 gene copies per liter in the laboratory sample. For context, this single data point should be compared to the rolling 30-day average and historical data to assess the trend. These measurements reflect virus presence in wastewater and do not indicate individual disease severity.

Two tables help interpret the data. Table 1 summarizes the combined viral activity over the last seven days, providing a snapshot of current conditions. Table 2 shows the annual historical peak levels for each virus, offering long-term context. This helps determine if current measurements are typical or unusual compared to past seasons.

A short glossary explains key terms. RSV, or respiratory syncytial virus, is a common cause of respiratory illness. Influenza A and Influenza B are viruses that cause seasonal flu. RNA is the genetic material of these viruses that is detected. PCR is a laboratory method used to find and measure this RNA.


Table 1: Latest Influenza A, Influenza B, and RSV Levels in Wastewater (last7 Days)
Date Influenza A (gc/L) Influenza B (gc/L) RSV (gc/L)
2026-03-29 0 0 11,840
2026-03-28 0 0 11,840
2026-03-26 6,520 40 9,800
2026-03-24 0 40 23,520
2026-03-22 0 40 26,680
2026-03-21 0 40 26,680
2026-03-19 0 0 40,000


Table 2: Highest Yearly Influenza and RSV Levels Detected in Wastewater by Year (as of 2026-03-29)
year Date Influenza A (gc/L) Influenza B (gc/L) RSV (gc/L) Total (gc/L)
2026 2026-02-26 0 488000 30800 518800
2025 2025-12-06 456000 0 44400 500400
2024 2024-10-01 0 0 219200 219200
2023 2023-12-07 50800 1008 828000 879808
2022 2022-12-01 263200 77200 1052000 1392400
2021 2021-11-21 0 0 66400 66400

Data source: Abwassermonitoring: Influenza und RSV
Additional resources: Infectious Diseases Dashboard (IDD), OGD-BS Dashboard: Virenmonitoring im Abwasser

🤖 This text was generated with the assistance of AI. All quantitative statements are derived directly from the dataset listed under Data Source.