The Delhi government has begun plasma therapy trials on four coronavirus patients at the LNJP hospital in Delhi. They say the results have been satisfactory and now Delhi Chief Minister Arvind Kejriwal has urged patients who have recovered to come forth and donate plasma. Doctors explain what the plasma therapy is and how it has the potential to save lives. Doctors also explain how only a recovered patient can donate blood plasma. Doctors also address the protocols for transfusion and risks involved.