COVID-19(9) pandemic(6) COVID-19 pandemic(5) age(4) Protein(3) binding(3) approach(3) less(3) SARS-CoV-2(3) unique(3) RNA(3) Government(3) caused(3) virus(3) Population(3) therapeutic(3) measure(3) the disease(3) country(3) risk(3) investigated(3) HIV(2) turn(2) hyper-inflammation(2) Community(2) red blood cell(2) incidence(2) acute respiratory syndrome(2) favor(2) nitric oxide(2)