Fig. 1

Typical chest computed tomography imaging of COVID-19 patients. Panels a and b show chest computed tomography images from a middle-aged male with non-severe COVID-19 at time of admission, showing several scattered ground-glass opacities (A, B the red arrow point). Panel c and d show chest computed tomography imaging findings from a middle-aged male with severe COVID-19 at time of admission, showing bilateral patchy shadows and consolidation (C, D the blue arrow point). COVID-19: coronavirus disease 2019