Screening interested participants should sign the appropriate informed consent (ICF) prior to completion any study procedures.~The investigator will review symptoms, risk factors, and other non-invasive inclusion and exclusion criteria.~The following is the general sequence of events during the 30-day evaluation period:~Completion of baseline procedures Participants were assessed for 30 days and completed all safety monitoring.
In the assessment of severity in coronavirus disease 2019 (COVID-19), the modified Brit_x0002_ish Thoracic Society (mBTS)，CURB65 et al. rules identifies patients with severe pneumonia but not patients who might be suitable for home management. A multicentre prospective study was conducted to derive and validate a practical severity assessment model for stratifying adults hospitalised with COVID-19 into different management groups.