SARS-CoV-2(13) Infection(12) clinical trial(10) collected(8) the SARS-CoV-2(8) COVID-19(8) protocol(7) pandemic(7) Patient(7) Repurposed drugs(6) outcome(6) SARS-CoV-2 detection(6) Trial(6) antiviral drugs(6) Effect(6) demonstrated(6) clinical trials(6) drug(6) COVID-19 patients(6) antiviral drug(6) Vaccine(6) clinical(6) SARS-CoV-2 RNA(5) coronavirus disease(5) caused(5) virus(5) Contamination(5) positive(5) followed by(5) receptor antagonist(4)