Abstract Coronavirus Disease 2019 (COVID-19) has been the most severe public health
challenge in this century. Two years after its emergence, the rapid development and …

As the fifth variant of concern of the SARS‐CoV‐2 virus, the Omicron variant (B. 1.1. 529)
has quickly become the dominant type among the previous circulating variants worldwide …

Abstract In late 2022, SARS-CoV-2 Omicron subvariants have become highly diversified,
and XBB is spreading rapidly around the world. Our phylogenetic analyses suggested that …

Continuous evolution of Omicron has led to a rapid and simultaneous emergence of
numerous variants that display growth advantages over BA. 5 (ref.). Despite their divergent …

The SARS-CoV-2 BA. 2.86 lineage, first identified in August 2023, is phylogenetically distinct
from the current circulating SARS-CoV-2 omicron XBB lineages, including EG. 5.1 and HK …

The continued evolution of SARS-CoV-2 has led to the emergence of several new Omicron
subvariants, including BQ. 1, BQ. 1.1, BA. 4.6, BF. 7, and BA. 2.75. 2. Here, we examine the …

The newly emerged SARS-CoV-2 saltation variant, BA. 2.86, has raised global concern
(appendix 1 p 7). By Sept 8, 2023, 95 sequences were detected, of which their early …

After the global spread of the SARS-CoV-2 Omicron BA. 2, some BA. 2 subvariants,
including BA. 2.9. 1, BA. 2.11, BA. 2.12. 1, BA. 4, and BA. 5, emerged in multiple countries …

The recent emergence of SARS-CoV-2 Omicron (B. 1.1. 529 lineage) variants possessing
numerous mutations has raised concerns of decreased effectiveness of current vaccines …

In September, 2023, the SARS-CoV-2 XBB descendants, such as XBB. 1.5 and EG. 5.1
(originally XBB. 1.9. 2.5. 1), are the predominant variants circulating worldwide. 1 …