Fig. 2.

Representative plots of wastewater analysis by droplet digital PCR. (A) No template control. (B) Wastewater sample with low concentration of SARS-CoV-2 genomes. (C) Wastewater sample with a high concentration of SARS-CoV-2 genomes. N1, SARS-CoV-2 nucleocapsid probe 1 (red); N2, SARS-CoV-2 nucleocapsid probe 2 (gold); RPP30, probe for human ribonuclease P/MRP subunit p30 (dark blue). N1+N2; double positive droplets (tan). (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)