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 10 data from 60 WWTPs for SARS-CoV-2, from 60 WWTPs for influenza A virus and influenza B, from 31 WWTPs for RSV A and B and from 22 WWTPs of RSV A/B (joint measurements of RSV A and B) were available. Data from other WWTP are provided continuously. Over the last weeks, a decreasing aggregated SARS-CoV-2 viral load can be observed. The values of the aggregated influenza A and B viruses are declining but still on a high level. The RSV load values in wastewater have increased in recent weeks, with the values for RSV B appearing to have increased more rapidly than for RSV A. The aggregated viral load of the combined measurements of RSV A and B seems to further increase after a smaller measurement value in the previous week. The development observed over the last few weeks may still change due to late notifications.