et al., 2020).

5  DIAGNOSIS
A proper diagnosis of COVID‐19 is made based on the following criteria, which have been recently suggested based on the initial investigations: (a) clinical signs and symptoms, (b) history of traveling or close contact with people suspected to be infected, (c) positive test result for the pathogen, and (d) pathologic findings on CT images. The key clinical features of COVID‐19, though nonspecific, include fever, dry cough, dyspnea, and pneumonia (Chen, Zhou,