Figure 3.

Summary results of illness severity in children with COVID‐19. The definition of illness severity was mentioned as follows: (A) without any clinical symptoms and signs. Chest imaging examination was normal, while the 2019‐nCoV nucleic acid test is positive. B, The main manifestations were acute upper respiratory tract infection and some children may have only digestive symptoms. Physical examination shows no auscultatory abnormalities. C, With pneumonia, some cases may have no clinical symptoms and signs, but chest CT shows lung lesions, which are subclinical. D, The disease usually progresses in about 1 week, and dyspnea occurs, oxygen saturation is less than 92%. E, Children can quickly progress to acute respiratory distress syndrome (ARDS) or respiratory failure, multiple organ dysfunction can be life‐threatening. COVID‐19, coronavirus disease 2019; CT, computed tomography