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 …

Omicron spike (S) encoding vaccines as boosters, are a potential strategy to improve COVID-
19 vaccine efficacy against Omicron. Here, macaques (mostly females) previously …

The Omicron variant is rapidly becoming the dominant SARS-CoV-2 virus circulating
globally. It is important to define reductions in virus neutralizing activity in the serum of …

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) omicron variant
emerged in November 2021 and consists of several mutations within the spike. We use …

The highly contagious SARS-CoV-2 Omicron subvariants severely attenuated the
effectiveness of currently licensed SARS-CoV-2 vaccines based on ancestral strains …

Summary The SARS-CoV-2 Omicron variant (B. 1.1. 529) contains mutations that mediate
escape from antibody responses, although the extent to which these substitutions in spike …

Abstract The SARS-CoV-2 Omicron variant has demonstrated enhanced transmissibility and
escape of vaccine-derived immunity. Although first-generation vaccines remain effective …

Neutralization of Omicron with Third Vaccine Dose Serum samples from 20 participants who
had received two doses of the BNT162b2 vaccine and from 20 who had received three …

Current COVID-19 vaccines are based on prototypic spike sequences from ancestral 2019
SARS-CoV-2 strains. However, the ongoing pandemic is fueled by variants of concern …

Background The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron
(B. 1.1. 529) variant has proven to be highly transmissible and has outcompeted the Delta …