COVID-19(100) SARS-CoV-2(92) coronavirus(35) Vaccine(35) Patient(32) Analysis(30) Infection(28) Interaction(27) SARS-CoV-2.(27) Protein(26) effective(24) caused(23) Mutation(23) Treatment(23) pandemic(21) Effect(20) SARS-COV-2 infection(20) variant(20) Host(20) virus(18) immune response(17) outbreak(17) respiratory(16) drug(16) coronavirus disease(16) Efficacy(15) cytokine(14) Clinical outcome(14) addition(14) docking(13)