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

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Fig. 4 — Results of respiratory virus detection in wastewater and of number of cases reported in public health databases. A) Detection of SARS-CoV-2, influenza virus, and RSV during the sampling campaign in both WWTPs (left Y-axis log₁₀GC/L). B) Primary care and hospital diagnostics in the area covered by the two WWTPs (right Y-axis log₁₀ number of reported cases).