Since 2019, novel coronavirus Disease 2019 (COVID-19) has spread and prevailed all over the world. COVID-19 has a wide range of clinical manifestations of respiratory and non-respiratory symptoms, including mild or severe influenza-like syndrome, respiratory distress or respiratory failure, and may end in multiple organ failure. Mesenchymal stem cells (MSCS) are considered as ideal seed cells for the treatment of various diseases due to their unique immune regulation, self-renewal and multiple differentiation potentials. The safety of MSC transplantation in the treatment of COVID-19 patients has been proved by a number of clinical studies, and has shown good clinical efficacy in shortening the course of the disease, alleviating lung damage, and reducing the level of inflammatory factors. However, previous clinical studies mainly focused on the efficacy of MSC transplantation in critically ill patients of COVID-19, ignoring the important role of cell transplantation in delaying or preventing COVID-19 's progress and preventing reinfection.COVID-19 has spread throughout the country and even the world, and the increase in severe and critical cases has caused a great impact on national medical and health resources. Stem cell transplantation offers new treatment ideas for COVID-19 patients. Since the role of cell transplantation in delaying or preventing the progression of light and medium novel coronavirus infection and preventing reinfection has not been clearly reported, this study intends to use MSC transplantation to evaluate the role of stem cells in the occurrence and development of novel coronavirus infection, so as to provide an important reference for the prevention and treatment of COVID-19 by MSC.
This study is to evaluate the safety and efficacy of umbilical cord mesenchymal stem cells Therapy for COVID-19.