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.
(Top) Occurrence (i.e., the numbers of reads corresponding to each mutation) of characteristic S, E, M, and N protein mutations and ORF1ab mutations of the Omicron variant. (Bottom) Heatmap showing the allele frequency and the alternate nucleotide of the characteristic synonymous mutations of the Omicron variant. Airport, wastewater sample with a significant fraction from Frankfurt Airport; Residential, influent wastewater sample collected from the WWTP of Frankfurt City.
