This study has 2 arms: the standard care group followed the COVID-19 guidelines of the Ministry of Health of Vietnam and the interventional group: Fluticasone propionate MDI with spacer, twice a day for 14 days.~The study participants will be monitored via video call from day 1 to day 14, day 21, and day 28 after randomized.
A multicenter, open-label, randomized controlled trial to evaluate the efficacy of fluticasone propionate (metered dose inhaler - MDI) added to standard care at early stage of COVID-19 in reducing the incidence of adverse outcomes (any of those following: oxygen therapy, systemic corticosteroids, hospitalization, mechanical ventilation, and mortality) in symptomatic patients either from 18 to 49 years of age with risk factors or older than 50 years.