The virological clearance rate of throat swabs, sputum, or lower respiratory tract secretions at day 3;The virological clearance rate of throat swabs, sputum, or lower respiratory tract secretions at day 7;The virological clearance rate of throat swabs, sputum, or lower respiratory tract secretions at day 5;The mortality rate of subjects at weeks 2

The virological clearance rate of throat swabs, sputum, or lower respiratory tract secretions at day 3;The virological clearance rate of throat swabs, sputum, or lower respiratory tract secretions at day 7;The virological clearance rate of throat swabs, sputum, or lower respiratory tract secretions at day 5;The mortality rate of subjects at weeks 2