Fig. 5.

Model output (green triangles) and observed SARS-CoV-2 RNA concentrations (black circles) for the Facility 1 wastewater. The observed data represent mean log10 concentrations ±1standard deviation across all positive assays for a given sample. Purple diamonds indicate new daily cases within the sewershed [50% asymptomatic (assumed) and 50% symptomatic(clinically confirmed)], blue circles represent cumulative cases within the sewershed (asympomatic + symptomatic), and red squares indicate the number of shedding individuals at any time (modeled). The red numbers indicate days of interest: (1) first detection of SARS-CoV-2 RNA in Facility 1 wastewater, (2–3) period of consistent detections of SARS-CoV-2 RNA in wastewater, (4–5) period of strongest SARS-CoV-2 RNA signal in wastewater. Parentheses on the left vertical axis indicate relative COVID-19 incidence or prevalence within the sewershed.