COVID-19(16) SARS-CoV-2(8) variant(7) SARS-COV-2 infection(6) TLR3(6) Patient(5) with COVID-19(5) susceptibility(4) Treatment(4) IL-6 antagonist(3) Randomized controlled trial(3) functional(3) pandemic(3) reduce(3) Correlation analysis(3) Efficacy(3) Vaccine(2) IMPROVE(2) mTOR inhibitors(2) Surveillance(2) Antiviral medications(2) therapeutic potential(2) Isolation(2) Positive retest(2) researcher(2) Factor(2) natural selection(2) independent risk factor(2) suggested(2) Cell signaling(2)