Since the first cases of COVID-19 were documented in Wuhan, China in 2019, the world has
witnessed a devastating global pandemic, with more than 238 million cases, nearly 5 million …

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 …

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

In the past two decades, three coronaviruses with ancestral origins in bats have emerged
and caused widespread outbreaks in humans, including severe acute respiratory syndrome …

Bats are reservoir hosts for many zoonotic viruses. Despite this, relatively little is known
about the diversity and abundance of viruses within individual bats, and hence the …

The emergence of several new variants of severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) in recent months has raised concerns around the potential impact on …

The COVID-19 pandemic has given the study of virus evolution and ecology new relevance.
Although viruses were first identified more than a century ago, we likely know less about …

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of
coronavirus disease 2019, emerged in December 2019. Its origins remain uncertain. It has …

Coronaviruses (CoVs) constitute a large and diverse subfamily of positive-sense single-
stranded RNA viruses. They are found in many mammals and birds and have great …

The lack of an identifiable intermediate host species for the proximal animal ancestor of
SARS-CoV-2, and the large geographical distance between Wuhan and where the closest …