CRP and infection: 29.57% of patients underwent CBC test, 8.99% of the patients had abnormal white blood cells, 7.87% had abnormal neutrophil proportion, 11.24% had abnormal lymphocyte proportion, 7.3% had abnormal hemoglobin, 11.24% had abnormal platelet proportion, 12.36% had abnormal CRP, and abnormal white blood cells in these patients were all mildly elevated with less than 15 × 109/L, accompanied by an increase in the proportion of neutrophils, a decrease in the proportion of lymphocytes, and an increase in CRP, which indirectly indicated the infection of the COVID-19 virus.