Since the start of the COVID-19 pandemic, numerous variants of SARS-CoV-2 have been
reported worldwide. The advent of variants of concern (VOCs) raises severe concerns amid …

Abstract The SARS-CoV-2 Omicron is currently the predominant circulating variant in the
COVID-19 pandemic. The dominating Omicron sublineages respond to host immune …

Systematic monitoring of SARS-CoV-2 co-infections between different lineages and
assessing the risk of intra-host recombinant emergence are crucial for forecasting viral …

Abstract Objectives To describe Delta/Omicron SARS-CoV-2 variants co-infection detection
and confirmation during the fifth wave of COVID-19 pandemics in France in 7 …

Genomic recombination is an important driving force for viral evolution, and recombination
events have been reported for severe acute respiratory syndrome coronavirus 2 (SARS-CoV …

Recombination is a key molecular mechanism for the evolution and adaptation of viruses.
The first recombinant SARS-CoV-2 genomes were recognized in 2021; as of today, more …

Immunocompromised patients can experience prolonged SARS-CoV-2 infections in the
setting of a lack of protectivity immunity despite vaccination. As circulating SARS-CoV-2 …

Genomic sequences from rapidly evolving pathogens, sampled over time, hold information
on disease origin, transmission, and evolution. Together with their sampling times …

Coronavirus disease 2019 (COVID-19) is a worldwide pandemic infectious disease caused
by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). World Health …

During the first semester of 2021, all of Brazil has suffered an intense wave of COVID-19
associated with the Gamma variant. In July, the first cases of Delta variant were detected in …