Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) breakthrough infections in
vaccinated individuals and reinfections in previously infected individuals have become …

Background The COVID-19 pandemic is caused by the betacoronavirus SARS-CoV-2. In
November 2021, the Omicron variant was discovered and immediately classified as a …

Abstract The SARS-CoV-2 Omicron variant (B. 1.1. 529 lineage) escapes antibodies that
neutralize the ancestral virus. We tested human serum panels from participants with differing …

Discussion There have been over 8.2 billion doses of SARS-CoV-2 vaccines administrated
in more than 4.3 billion persons around the world [1]. However, the emerging of the Omicron …

At the end of 2021 a new SARS-CoV-2 variant, Omicron, emerged and quickly spread
across the world. It has been demonstrated that Omicron's high number of Spike mutations …

The rapid spread of the SARS-CoV-2 Omicron (B. 1.1. 529) variant, including in highly
vaccinated populations, has raised important questions about the efficacy of current …

The Omicron variant of SARS-CoV-2 has been shown to evade neutralizing antibodies
elicited by vaccination or infection. Despite the global spread of the Omicron variant, even …

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 …

A limitation of current SARS-CoV-2 vaccines is that they provide minimal protection against
infection with current Omicron subvariants,, although they still provide protection against …

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 …