The SARS-CoV2 infection will not produce a large number of inflammatory factors, reducing the damage of autoimmunity to the lungs, heart, liver, and other organs, and the possibility of occurrence of an inflammatory storm, which is an important mechanism leading to the death of patients with severe disease.[68,69] Therefore, lymphocytes in children with COVID-19 rarely decline significantly, and the levels of inflammation indicators such as C-reactive protein are usually normal or transiently elevated. Here, CRP is linked to COVID-19.