CRP and Increased total leukocyte count: Blood routine examination showed leukocytosis (WBC, white blood cell 18 × 10^9/L, ref: 3.50–9.50 × 10^9/L), thrombocytopenia (PLT, platelet, 39 × 10^9/L, ref:125–350 × 10^9/L), increased levels of ultrasensitive CRP (C-reactive protein, 288.5 mg/L, ref:<10 mg/L) and PCT (Pre-calcitoninogen, 42.6 ng/ml, ref: <0.5 ng/ml).