F.D.A. Authorizes AstraZeneca Drug for People With Immune Problems December 9, 2021 Auto Bot antibodies, AstraZeneca PLC, Coronavirus (2019-nCoV), Evusheld, Food and Drug Administration, Immune System 0 The antibody drug, Evusheld, was found to be strongly effective in preventing Covid in a clinical trial that enrolled mostly those at high risk.