COVID-19(40) Saudi Arabia(21) Patient(18) Asymptomatic(13) severity(11) coronavirus disease(11) SARS-CoV-2(11) pandemic(11) cross-sectional(10) male(10) patients(9) conducted(9) disease(9) significantly(9) coronavirus(9) age(8) outcome(8) acute respiratory syndrome(8) cross-sectional study(7) King(7) participant(7) evaluate(7) Treatment(7) vaccination(7) moderate(7) IgG(7) neutrophil(7) Coronavirus disease-19(7) Prevalence(6) with COVID-19(6)