Recently, the severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) Omicron
variant (B. 1.1. 529) was first identified in Botswana in November 2021. It was first reported …

The past several months have witnessed the emergence of SARS-CoV-2 variants with novel
spike protein mutations that are influencing the epidemiological and clinical aspects of the …

The unceasing circulation of SARS-CoV-2 leads to the continuous emergence of novel viral
sublineages. Here, we isolate and characterize XBB. 1, XBB. 1.5, XBB. 1.9. 1, XBB. 1.16. 1 …

Convergent evolution of SARS-CoV-2 Omicron BA. 2, BA. 4, and BA. 5 lineages has led to
the emergence of several new subvariants, including BA. 2.75. 2, BA. 4.6. and BQ. 1.1. 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 …

Abstract The SARS-CoV-2 Omicron variant was first identified in November 2021 in
Botswana and South Africa,–. It has since spread to many countries and is expected to …

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 …

Summary Background Several SARS-CoV-2 variants of concern have been identified that
partly escape serum neutralisation elicited by current vaccines. Studies have also shown …

The severe acute respiratory syndrome coronavirus 2 Omicron BA. 1 sublineage has been
supplanted in many countries by the BA. 2 sublineage. BA. 2 differs from BA. 1 by about 21 …

Background Vaccines are critical cost-effective tools to control the coronavirus disease 2019
(COVID-19) pandemic. However, the emergence of variants of the severe acute respiratory …