FIG 3.

Data from Wolfe et al. (7) (in color) showing daily measurement of SARS-CoV-2 in wastewater overlaid on results from Fig. 2 showing daily measurements from this study. Both data sets show 7-day smoothed COVID-19 incidence rate plotted against daily wastewater measurements of N gene copies/g, N gc/g normalized by PMMoV, and N gc/g scaled by F. The two data sets are both generated from analysis of solids; however, Wolfe et al. (7) used a more labor-intensive, small scale set of methods and slightly different genomic targets versus the high-throughput methods presented in this paper.