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.
The number of active cases in the catchment area of the Davos, Landquart, Lostallo, and S-chanf wastewater treatment plants from 5 November to 23 December 2021 with a smoothed curve using the Loess method. The number of active cases is calculated by counting the positively tested infected persons as active for 10 days from the day of the positive PCR test.
