Although SARS-CoV-2 is considered a lung-tropic virus that infects the respiratory tract
through binding to the ACE2 cell-surface molecules present on alveolar lungs epithelial …

Background A novel variant of SARS-CoV-2, the Delta variant of concern (VOC, also known
as lineage B. 1.617. 2), is fast becoming the dominant strain globally. We reported the …

Abstract SARS-CoV-2, the causal agent of COVID-19, is primarily a pulmonary virus that can
directly or indirectly infect several organs. Despite many studies carried out during the …

The emergence of a rapidly spreading and highly infectious coronavirus disease 2019
(COVID-19) outbreak by a novel coronavirus, severe acute respiratory syndrome …

Populations of RNA viruses are composed of complex and dynamic mixtures of variant
genomes that are termed mutant spectra or mutant clouds. This applies also to SARS-CoV …

Viruses play a primary role as etiological agents of pandemics worldwide. Although there
has been progress in identifying the molecular features of both viruses and hosts, the extent …

The Porcine reproductive and respiratory syndrome virus (PRRSV), a single (+) RNA virus,
is characterized by high genome variability and constant evolution. Owing to increasingly …

Introduction: Severe Acute Respiratory Syndrome Coronavirus–2, SARS-CoV-2, is a
wellknown virus for its fatal infectivity and widespread impact on the health of the worldwide …

Severe acute respiratory syndrome (SARS)-coronavirus-2 (CoV-2) is a beta-coronavirus
(beta-CoV; sarbecovirus), like its predecessors SARS and MERS CoVs. Of the structural …

Background The outbreak of coronavirus disease (COVID-19) poses a great threat to global
public health. At present, the number of newly confirmed COVID-19 cases and deaths is …