6 Differential Diagnosis

There are more than 100 species of pathogens that cause communityacquired pneumonia, of which viruses account for about 30%, and others viruses which cause pneumonia have something in common with the common influenza virus, parainfluenza virus, adenovirus, respiratory syncytial virus, rhinovirus, human metapneumovirus, SARS-CoV, etc. It is difficult to distinguish from clinical manifestations and chest imaging alone,while pathogenic testing is needed.