Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused millions of
deaths and substantial morbidity worldwide. Intense scientific effort to understand the …

Abstract SARS-CoV-2, the virus responsible for the COVID-19 pandemic, has been
associated with substantial global morbidity and mortality. Despite a tropism that is largely …

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 …

Understanding how severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
emerged in 2019 is critical to preventing future zoonotic outbreaks before they become the …

Abstract Three lineages (BA. 1, BA. 2 and BA. 3) of the severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) Omicron variant of concern predominantly drove South Africa's …

Understanding the circumstances that lead to pandemics is important for their prevention.
We analyzed the genomic diversity of severe acute respiratory syndrome coronavirus 2 …

Objectives To characterize the clinical severity of covid-19 associated with the alpha, delta,
and omicron SARS-CoV-2 variants among adults admitted to hospital and to compare the …

The animal reservoir of SARS-CoV-2 is unknown despite reports of SARS-CoV-2-related
viruses in Asian Rhinolophus bats,,–, including the closest virus from R. affinis, RaTG13 …

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 …

On 24 th November 2021, the sequence of a new SARS-CoV-2 viral isolate Omicron-B. 1.1.
529 was announced, containing far more mutations in Spike (S) than previously reported …