The progress of disease:
In our studies, the temperature of fevers returned to normal by treatment in 1-5 days (2.7 days as average). By closing obvious every three days, we could see the tendency of the indexes change during treatment. The key indexes, LDH and LC may keep progress to extreme point on the 3 days after hospitalization (6-9 days after onset) (Figure 5) . Corrected electrolyte imbalance and kept an eye on potassium was important.
All 64 cases were treated by triple therapy (Interferon, Lopinavir/ritonavir, Abidor),9 (14.06%) had glucocorticoid treated, and 19 (29.69%) had antibiotic use with 8 days as the average course. The average of hospitalization was 25.8 days, all patients were discharged by data were collected (March 4, 2020) (Table 1 ). The COVID-19 nucleic acid test transforming to negative was about 10-20 days (12.8 as average).