Comparison of significant different parameters before, during and after treatment
By comparing the parameters of all patients before, during and after admission, we found that the WBC, LYM%, Hb, CRP of COVID-19 patients were more sensitive to clinical treatment compared with those of common pneumonia patients. The levels of WBC and LYM% increased, while the levels of Hb and CRP decreased with the recovery of COVID-19 patients (Table 2 , Figure 2 ). CRP level in common pneumonia patients was relatively sensitive to treatment and decreased with clinical treatment(Table 2 , Figure 2 ).