Since its emergence at the end of 2019, severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) has caused the infection of more than 600 million people worldwide and has …

SARS coronavirus 2 (SARS-CoV-2), the causative agent of COVID-19, emerged in China in
December 2019. Vaccines developed were very effective initially, however, the virus has …

The BQ and XBB subvariants of SARS-CoV-2 Omicron are now rapidly expanding, possibly
due to altered antibody evasion properties deriving from their additional spike mutations …

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 …

A severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron subvariant, BA.
2.86, has emerged and spread to numerous countries worldwide, raising alarm because its …

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 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 …

Background The emergence of immune-escape variants of severe acute respiratory
syndrome coronavirus 2 warrants the use of sequence-adapted vaccines to provide …

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 …

In late 2022, various Omicron subvariants emerged and cocirculated worldwide. These
variants convergently acquired amino acid substitutions at critical residues in the spike …