Pneumonia, as one of major global health issues, is extremely prevalent and associated with high short-and long-term mortality. Many respiratory pathogens, including viruses, bacteria, and fungi, can cause pneumonia. 1 Currently, common causes of bacterial pneumonia are Streptococcus pneumoniae and Mycoplasma pneumoniae, while viral agents associated with pneumonia include influenza viruses, respiratory syncytial viruses, and the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Pneumonia is characterized by the presence of