Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Two-week moving average of SARS-CoV-2 concentrations (N1 copies per L) in sewage for selected regions in sewersheds Arrudas (A) and Onça (B). The values shown in these graphs have been adjusted to account for the decay of RNA in the sewers (Section 2.5, Material and methods).
