This clinical trial is set out to evaluate the followings:~the safety and efficacy of allogeneic human dental pulp mesenchymal stem cells in the treatment of severe pneumonia caused by COVID-19;~to explore the effects of human dental pulp mesenchymal stem cells in the treatment of severe pneumonia of COVID-19 in terms of reducing mortality and improving clinical prognosis; and~to discover a new therapeutic strategy for COVID-19 using allogeneic human dental pulp mesenchymal stem cells.
This clinical trial is set out to evaluate the safety and efficacy of allogeneic human dental pulp mesenchymal stem cells in the treatment of severe pneumonia caused by COVID-19; to explore the effects of human dental pulp mesenchymal stem cells in the treatment of severe pneumonia of COVID-19 in terms of reducing mortality and improving clinical prognosis; and to discover a new therapeutic strategy for COVID-19 using allogeneic human dental pulp mesenchymal stem cells.