Wastewater-based Surveillance

Abstract

In the AMELAG project, SARS-CoV-2, influenza viruses and respiratory syncytial virus (RSV) are monitored in wastewater. Nationwide, 168 wastewater treatment plants were participating by the end of 2024; up to 70 sites are expected to participate in 2025. The data collected will be integrated into this report in the coming weeks. For the calendar week 14 data from 69 WWTPs for SARS-CoV-2, from 68 WWTPs for influenza A virus and influenza B, from 31 WWTPs for RSV A and B and from 32 WWTPs of RSV A/B (joint measurements of RSV A and B) were available. Data from other WWTP are provided continuously. After a continuous decrease within the last months, the aggregated SARS-CoV-2 viral load is currently on a low level. The values of the aggregated influenza A and B viruses have been declining for a couple of weeks. The RSV load values in wastewater have been quite stable within the last three weeks for RSV A and RSV B. The aggregated viral load of the combined measurements of RSV A and B has decreased significantly within the last two weeks. The development observed over the last few weeks may still change due to late notifications.