"It is biologically plausible that patients who are not producing antibodies at the time of convalescent plasma therapy and those patients with excess virus may benefit more than others. Smaller studies of convalescent plasma in COVID-19 patients in India and in Argentina have also found no apparent benefit for those critically or severely ill with the disease . "Why convalescent plasma does not seem to improve outcome in severely ill COVID-19 patients admitted to the ICU is not yet known. But scientists and doctors called for convalescent plasma trials to continue and for recovered COVID-19 patients to continue to donate their blood in the hope it might help others. It has already recruited 4,100 COVID-19 patients for convalescent plasma trials at more than 290 clinical sites across Europe, the Americas, Asia, Africa and Australasia.

Source: bd News24 January 11, 2021 17:26 UTC