The number of patients with COVID-19 has surged during the Omicron pandemic worldwide.
It remains unclear whether and how previous SARS-CoV-2 infection and vaccine-induced …

The Omicron variant of SARS-CoV-2 is emerging in communities where people were
previously infected with SARS-CoV-2 and are now being vaccinated, or where many people …

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 …

Abstract The Omicron (B. 1.1. 529) variant of severe acute respiratory syndrome coronavirus
2 (SARS-CoV-2) was initially identified in November 2021 in South Africa and Botswana, as …

Background SARS-CoV-2 vaccines currently authorized for emergency use have been
highly successful in preventing infection and lessening disease severity. The vaccines …

The emerging new VOC B. 1.1. 529 (Omicron) variant has raised serious concerns due to
multiple mutations, reported significant immune escape, and unprecedented rapid …

Abstract Background The SARS-CoV-2 virus elicited a major public concern worldwide
since December 2019 due to the high number of infections and deaths caused by COVID …

Recent reports of SARS-CoV-2 Omicron variant sub-lineages, BA. 1, BA. 1.1, and BA. 2,
have reignited concern over potential escape from vaccine-and infection-induced immunity …

Background The immune profile against severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) has dramatically diversified due to a complex combination of exposure to …

COVID-19 caused by SARS-CoV-2 was declared a global pandemic on March 11, 2020.
Omicron, the currently dominant variant, is characterized by increased immune evasion …