In late 2020, after circulating for almost a year in the human population, severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) exhibited a major step change in its …

Since the outbreak of the coronavirus disease 2019 (COVID-19) pandemic, there have been
a few variants of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), one of …

After the global spread of the SARS-CoV-2 Omicron BA. 2, some BA. 2 subvariants,
including BA. 2.9. 1, BA. 2.11, BA. 2.12. 1, BA. 4, and BA. 5, emerged in multiple countries …

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 …

The emergence of the SARS-CoV-2 variant of concern Omicron (Pango lineage B. 1.1. 529),
first identified in Botswana and South Africa, may compromise vaccine effectiveness and …

Recent surveillance has revealed the emergence of the SARS-CoV-2 Omicron variant (BA.
1/B. 1.1. 529) harboring up to 36 mutations in spike protein, the target of neutralizing …

The severe acute respiratory distress syndrome coronavirus 2 (SARS-CoV-2) Omicron
variant is spreading rapidly, even in vaccinated individuals, raising concerns about immune …

The Omicron variant of SARS-CoV-2 is causing a rapid increase in infections across the
globe. This new variant of concern carries an unusually high number of mutations in key …

Background The coronavirus disease (COVID-19) epidemic has not been completely
controlled. Although great achievements have been made in COVID-19 research and many …

Summary The coronavirus disease 2019 (COVID-19) pandemic continues worldwide with
many variants arising, some of which are variants of concern (VOCs). A recent VOC, omicron …