Abstract The SARS-CoV-2 Omicron variant (B. 1.1. 529) has multiple spike protein
mutations, that contribute to viral escape from antibody neutralization,,–and reduce vaccine …

Importance Assessing COVID-19 vaccine performance against the rapidly spreading SARS-
CoV-2 Omicron variant is critical to inform public health guidance. Objective To estimate the …

The emergence of the Omicron variant of SARS-CoV-2 is an urgent global health concern. In
this study, our statistical modelling suggests that Omicron has spread more rapidly than the …

The emergence of the SARS-CoV-2 variant of concern Omicron (Pango lineage B. 1.1. 529),
first identified in Botswana and South Africa, may compromise vaccine effectiveness and …

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant of
concern evades antibody-mediated immunity that comes from vaccination or infection with …

Abstract The SARS-CoV-2 Omicron variant was first identified in November 2021 in
Botswana and South Africa,–. It has since spread to many countries and is expected to …

The severe acute respiratory syndrome coronavirus 2 Omicron BA. 1 sublineage has been
supplanted in many countries by the BA. 2 sublineage. BA. 2 differs from BA. 1 by about 21 …

Omicron is the evolutionarily most distinct severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) variant of concern (VOC) to date. We report that Omicron BA. 1 breakthrough …

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 …

Soon after the emergence and global spread of the SARS-CoV-2 Omicron lineage BA. 1,
another Omicron lineage, BA. 2, began outcompeting BA. 1. The results of statistical analysis …