Study of Clinical Features and the Immune Mechanism Affecting Prognosis in Patients With Autoimmune Liver Disease Complicated With Covid-19 Infection

With the decreasing virulence of omicrons strain, the current domestic epidemic prevention policy has been changed based on the health of the people and the development needs of the country. At present, the infection rate of the novel coronavirus in China is rising rapidly. Previous studies have found that patients with chronic liver disease are more likely to be co-infected with coronavirus disease 2019 and have a worse prognosis. Based on its unique immune mechanism and therapeutic drugs, patients with autoimmune liver disease also have very different manifestations after infection with the novel coronavirus. By observing the clinical characteristics and prognosis of patients with autoimmune liver disease complicated with coronavirus disease 2019, this study analyzed the roles of vaccines, immunosuppressive agents and ursodeoxycholic acid , and explored the immune mechanism behind them, so as to seek new anti-coronavirus disease 2019 drugs and provide new strategies for clinical prevention and treatment.