COVID-19(13) SARS-CoV-2(10) highly pathogenic influenza virus(2) coronavirus(2) Inactivated vaccine(2) cross-clade immunity(2) variants(2) H5N6(2) Cytokine storm(1) pathophysiology(1) antiviral activity(1) SARS CoV-2(1) DNA methylation signature(1) virulence(1) Ultrasound imaging(1) live virus neutralization test(1) immunohistochemical(1) Ethnomedicine(1) natural compounds(1) virus variants(1) Vaccine(1) trained immunity(1) Forensic(1) berberine(1) angiotensin-converting enzyme (ACE)(1) age(1) Transmissibility(1) curated dataset(1) immunoassays(1) Swab(1)