Figure 1.

How COVID-19 Radiographic Score was calculated in the initial chest radiograph of a 71-year-old Chinese man with COVID-19: the patient had a past medical history of hypertension and presented to our institution with fever, shortness of breath and diarrhoea (day 6 of symptoms onset). On CXR, the right upper zone was graded 0 (no opacity), right middle zone was graded 1 (<25% opacity) with grade 1 density (hazy), right lower zone was graded 3 (50–74% opacity) with grade 2 density, left upper zone was graded 0, left middle zone was graded 1 (<25% opacity) with grade 1 density (hazy), left lower zone was graded 4 with grade 2 density. A CRS of 16 (1+6+1+8) was obtained. The patient’s oxygen saturation was 93% on arrival and he was started on supplemental oxygen. The patient’s disease worsened and he was intubated on day 9 of symptom onset.