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. 2023 May 26;892:164495. doi: 10.1016/j.scitotenv.2023.164495

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Fig. 2 — Viral titers of RSV and influenza virus. Values are expressed as gene copies/L (GC/L) of influenza virus and RSV during the sampling campaign in wastewater from A) WWTP1 and B) WWTP2. Dots show the results of each sampling point for each virus and lines show the spline smoothers for each virus. Bottom line indicates the limit of detection (LOD) of Influenza virus (blue) and RSV (red). Non-detects have been replaced with LOD values/2.