On February 28, the State Council's joint prevention and control mechanism held a press conference. Guo Yanhong, the Supervisor of the Health, Medical and Health Administration of the National Health and Medical Commission, said that a large number of clinical studies have proved that the plasma of neocrown pneumonia patients can neutralize neocrown virus through specific antibodies. In order to achieve better results, its safety and effectiveness have been recognized. So far, 544 person-times of plasma have been collected nationwide for clinical treatment of 245 patients. During the clinical treatment of patients, according to the monitoring of a total of 157 patients over 48 hours, 91 of these 157 patients Patients' clinical indicators and symptoms improved. (Editor Chi Hanyu)

Editor-in-chief: [Liu Xian]