CRP and susceptibility to pneumonia measurement: For patients who were admitted to hospital for COVID-19, the rates of fever within 24 h of admission, saturation of peripheral oxygen (SpO2) at admission, and type of pneumonia were comparable in the two groups (Table 3), as well as absolute neutrophil count, absolute lymphocyte count, and levels of lactate dehydrogenase, C-reactive protein, and procalcitonin.