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 …

Since the outbreak of the coronavirus disease 2019 (COVID-19) pandemic, there have been
a few variants of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), one of …

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 Omicron lineage of SARS-CoV-2, which was first described in November 2021, spread
rapidly to become globally dominant and has split into a number of sublineages. BA. 1 …

The Omicron, or Pango lineage B. 1.1. 529, variant of severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) carries multiple spike mutations with high transmissibility and …

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron sublineages BA.
2.12. 1, BA. 4 and BA. 5 exhibit higher transmissibility than the BA. 2 lineage 1. The receptor …

SARS-CoV-2 mRNA vaccination induces robust humoral and cellular immunity in the
circulation; however, it is currently unknown whether it elicits effective immune responses in …

Neutralization of BA.4–BA.5, BA.4.6, BA.2.75.2, BQ.1.1, and XBB.1 with Bivalent Vaccine | New
England Journal of Medicine Skip to main content The New England Journal of Medicine …

Neutralization of Omicron BA. 1 and BA. 2 Variants Although two doses of BNT162b2
vaccine produce immunity that wanes over time, the administration of a booster dose …

Abstract The SARS-CoV-2 Omicron BA. 1 variant emerged in 2021 and has multiple
mutations in its spike protein. Here we show that the spike protein of Omicron has a higher …