In late 2020, after circulating for almost a year in the human population, severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) exhibited a major step change in its …

As of November 2021, several SARS‐CoV‐2 variants appeared and became dominant
epidemic strains in many countries, including five variants of concern (VOCs) Alpha, Beta …

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 …

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 …

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 …

Convergent evolution of SARS-CoV-2 Omicron BA. 2, BA. 4, and BA. 5 lineages has led to
the emergence of several new subvariants, including BA. 2.75. 2, BA. 4.6. and BQ. 1.1. The …

Summary Recently emerged SARS-CoV-2 Omicron subvariant, BA. 2.75, displayed a growth
advantage over circulating BA. 2.38, BA. 2.76, and BA. 5 in India. However, the underlying …

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

Omicron subvariants continuingly challenge current vaccination strategies. Here, we
demonstrate nearly complete escape of the XBB. 1.5, CH. 1.1, and CA. 3.1 variants from …

In late February, 2023, some sublineages of the SARS-CoV-2 omicron XBB variant
harbouring the F486P substitution in the spike protein (eg, XBB. 1.5 and XBB. 1.9) …