The newly emerging SARS-CoV-2 Omicron (B. 1.1. 529) variant first identified in South
Africa in November 2021 is characterized by an unusual number of amino acid mutations in …

The SARS-CoV-2 Omicron (B. 1.1529) variant was designated as a variant of concern (VOC)
by the World Health Organization (WHO) on November 26, 2021. Within two months, it had …

Since the emergence of the first omicron SARS-CoV-2 variant at the end of 2021, several
sub-variants have evolved and become predominant in the human population, showing …

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant is
becoming a dominant circulator and has several mutations in the spike glycoprotein, which …

New variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that have
acquired different mutations which modulate viral transmissibility, pathogenicity, and …

Abstract The Omicron (B. 1.1. 529), fifth variant of concern (VOC) of SARS‐CoV‐2, initially
identified following a steep increase in COVID‐19 cases in Southern Africa in November …

The mutation profile of the SARS-CoV-2 Omicron variant poses a concern for naturally
acquired and vaccine-induced immunity. We investigated the ability of prior infection with an …

Summary Background SARS-CoV-2 Omicron variant is rampantly spreading across the
globe. We assessed the pathogenicity and immune response generated by BA. 1.1 sub …

The emergence of SARS-CoV-2 variants of concern (VoCs) has exacerbated the COVID-19
pandemic. End of November 2021, a new SARS-CoV-2 variant namely the omicron (B. 1.1 …

Background: Since the first COVID-19 outbreak, variants of SARS-CoV-2 have continued to
dominate the global population. The repeated waves of emerging variants, each replacing …