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.
Pairwise nucleotide comparison and phylogenetic analysis of Delta–Omicron XD. (A) Pairwise nucleotide comparison of Delta, Delta–Omicron XD and Omicron BA.1 against the reference sequence (Wuhan‐Hu‐1). (B) Phylogenetic analysis of different portions of the first reported sequence of Delta–Omicron XD has been compared with VOCs, VOIs, and Omicron subvariants. VOCs, variants of concerns; VOIs, variants of interest.
