COVID-19/transmission; COVID-19/virology; Evolution, Molecular; SARS-CoV-2/genetics; SARS-CoV-2/pathogenicity; Angiotensin-Converting Enzyme 2/metabolism; Animals; Animals, Wild/virology; COVID-19/immunology; COVID-19/mortality; COVID-19 Vaccines/immunology; Child, Preschool; Cricetinae; Endosomes/metabolism; Giant Cells/metabolism; Giant Cells/pathology; Giant Cells/virology; Hospitalization/statistics & numerical data; Humans; Immune Evasion; Interferons/immunology; Lung/pathology; Lung/virology; Mutation; Nose/virology; Reinfection/immunology; Reinfection/mortality; Reinfection/virology; SARS-CoV-2/growth & development; SARS-CoV-2/immunology; Serine Endopeptidases/metabolism; Spike Glycoprotein, Coronavirus/genetics; Spike Glycoprotein, Coronavirus/immunology; Spike Glycoprotein, Coronavirus/metabolism; T-Lymphocytes/immunology; Viral Load; Viral Zoonoses/transmission; Viral Zoonoses/virology; Virus Replication

SARS-CoV-2; Virology