COVID-19(57) SARS-CoV-2(43) coronavirus(35) acute respiratory syndrome(34) coronavirus disease(32) respiratory(30) Coronavirus disease 2019(27) virus(27) Infection(27) caused(23) acute respiratory syndrome coronavirus(19) Protein(19) Patient(19) receptor(16) pandemic(14) outcome(13) disease(13) Cell(13) Vaccine(13) Spread(13) effective(12) death(12) host cell(11) Treatment(11) cytokine(11) analysis(11) Immunity(10) subjects(10) plasma(10) hypertension(10)