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 …

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 …

Abstract The Omicron (B. 1.1. 529) variant of SARS-CoV-2 emerged in November 2021 and
is rapidly spreading among the human population. Although recent reports reveal that the …

Since its discovery in 2019, multiple variants of severe acute respiratory syndrome
coronavirus-2 (SARS-CoV-2) have been identified. This study investigates virus spread and …

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 …

Since its first discovery, the Omicron variant of severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) has evoked another wave of infection and caused global …

The COVID-19 pandemic caused by severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) continues to disrupt global public health since its first report in December …

Since the emergence of SARS-CoV-2, five different variants of concern (VOCs) have been
identified: Alpha, Beta, Gamma, Delta, and Omicron. Because of confounding factors in the …

The in vivo pathogenicity, transmissibility, and fitness of the severe acute respiratory
syndrome coronavirus 2 (SARS-CoV-2) Omicron (B. 1.1. 529) variant are not well …

Summary Background Among the Omicron sublineages that have emerged, BA. 1, BA. 2,
BA. 5, and their related sublineages have resulted in the largest number of infections. While …