CRP and susceptibility to pneumonia measurement: In patients with Adv+ pneumonia, the white blood cell (WBC) count, neutrophils percentage, and C-reactive protein (CRP) level were 7.1 ± 3.9 × 109/L, 70.66% ± 13.58%, and 7.92 (2.25, 66.75) (mean [IQR]) g/L, respectively, and 82.6% of patients showed a Procalcitonin (PCT) level of <0.5 ng/mL.