Case Report
Copyright ©The Author(s) 2023.
World J Clin Cases. Feb 6, 2023; 11(4): 888-895
Published online Feb 6, 2023. doi: 10.12998/wjcc.v11.i4.888
Table 1 Illness severity for coronavirus disease 2019
Severity
Signs and symptoms
Asymptomatic/presymptomaticPositive for SARS-CoV-2 using a test but no symptoms that are consistent with COVID-19
Mild illnessSigns and symptoms of COVID-19 but no shortness of breath, dyspnea, or abnormal chest imaging
Moderate illnessSigns and symptoms of lower respiratory disease or abnormal imaging and SpO2 ≥ 94% on room air at sea level
Severe illnessSpO2 ≤ 94% on room air at sea level, PaO2/FiO2 < 300 mmHg, respiratory frequency > 30 breaths/min, or lung infiltrates > 50%
Critical illnessRespiratory failure, septic shock, and/or multiple organ dysfunction