COVID-19(32) Result(15) Health(14) pandemic(13) country(12) coronavirus(12) SARS-CoV-2(10) COVID-19 pandemic(10) Patient(9) 95% CI(9) age(8) measure(8) Infection(8) conducted(8) Factor(8) coronavirus disease(8) Spread(7) effective(7) death(7) male(7) caused(7) virus(7) association(6) reported(6) China(6) Analysis(6) acute respiratory syndrome(6) Community(6) participant(6) cross-sectional(5)