inclusion criterion: - bangladeshi aged 18-65 years admitted to any of the aforementioned study sites (hospitals) - either sex - at the enrollment having at least one of the following symptoms: temp 37.5 c or above, cough, sore throat - spo2 >94% - duration of illness ≤ 7 days - no oxygen support on enrollment - capable of swallowing oral medication - pcr positive for sars-cov2 virus - the participant properly informed about the study and agreed to sign the informed consent form (icf)

inclusion criterion: - bangladeshi aged 18-65 years admitted to any of the aforementioned study sites (hospitals) - either sex - at the enrollment having at least one of the following symptoms: temp 37.5 c or above, cough, sore throat - spo2 >94% - duration of illness ≤ 7 days - no oxygen support on enrollment - capable of swallowing oral medication - pcr positive for sars-cov2 virus - the participant properly informed about the study and agreed to sign the informed consent form (icf)