CRP and infection: In addition, although there were no significant differences, patients with COVID-19 pneumonia had lower infection-related biomarkers, including WBC ((10.4 ± 6.5)×109/L vs. (11.8 ± 3.8)×109/L, P = 0.49), lymphocyte ((0.7 ± 0.3)×109/L vs. (1.1 ± 0.7)×109/L, P = 0.26), neutrophil ((8.9 ± 5.9)×109/L vs. (10.1 ± 3.5)×109/L, P = 0.51), CRP (82.6 ± 72.9 mg/L vs. 139.2 ± 67.1 mg/L, P = 0.074) and PCT (3.4 ± 5.3 μg/L vs. 8.8 ± 8.7 μg/L, P = 0.16), than patients who did not have COVID-19 pneumonia.