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 …

The COVID-19 pandemic has created significant concern for everyone. Recent data from
many worldwide reports suggest that most infections are caused by the Omicron variant and …

Continuous evolution of Omicron has led to a rapid and simultaneous emergence of
numerous variants that display growth advantages over BA. 5 (ref.). Despite their divergent …

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a recently emerged
pathogenic human coronavirus that belongs to the sarbecovirus lineage of the genus …

Immune imprinting describes how the first exposure to a virus shapes immunological
outcomes of subsequent exposures to antigenically related strains. Severe acute respiratory …

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 …

The Omicron, or Pango lineage B. 1.1. 529, variant of severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) carries multiple spike mutations with high transmissibility and …

Currently circulating SARS-CoV-2 variants have acquired convergent mutations at hot spots
in the receptor-binding domain (RBD) of the spike protein. The effects of these mutations on …

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 …

Neutralizing antibodies are known to have a crucial role in protecting against SARS-CoV-2
infection and have been suggested to be a useful correlate of protection for vaccine clinical …