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 first dominant SARS‐CoV‐2 Omicron variant BA. 1 harbours 35 mutations in its Spike
protein from the original SARS‐CoV‐2 variant that emerged late 2019. Soon after its …

The emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants
in the Omicron lineage has resulted in diminished Coronavirus Disease 2019 (COVID-19) …

Abstract SARS-CoV-2 Delta and Omicron are globally relevant variants of concern. Although
individuals infected with Delta are at risk of developing severe lung disease, infection with …

Emerging strains of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the
causative agent of the coronavirus disease 2019 (COVID-19) pandemic, that show …

Our understanding of the still unfolding severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) pandemic would have been extremely limited without the study of the …

Background Up to the end of January, 2022, South Africa has had four recognisable COVID-
19 pandemic waves, each predominantly dominated by one variant of concern: the ancestral …

Genetic variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
continue to dramatically alter the landscape of the coronavirus disease 2019 (COVID-19) …

SARS-CoV-2 Omicron is highly transmissible and has substantial resistance to
neutralization following immunization with ancestral spike-matched vaccines. It is unclear …

Milder disease with Omicron: is it the virus or the pre-existing immunity? | Nature Reviews
Immunology Skip to main content Thank you for visiting nature.com. You are using a browser …