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 12 data from 70 WWTPs for SARS-CoV-2, from 69 WWTPs for influenza A virus and influenza B, from 32 WWTPs for RSV A and B and from 33 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 have been declining for a couple of weeks. The RSV load values in wastewater have increased on average within the last two months, though, there is a drop for the last week for RSV A and B. The aggregated viral load of the combined measurements of RSV A and B seems to increase on average within the last weeks. The development observed over the last few weeks may still change due to late notifications.