Summary: Featuring articles on a C5a receptor inhibitor for ANCA vasculitis, convalescent plasma in Covid-19, relugolix combination therapy for uterine fibroid symptoms, and promoting Covid-19 vaccination in the United States; a review article on maintaining safety with SARS-CoV-2 vaccines; a case report of a man with delirium and renal insufficiency; and Perspective articles on vaccinating children against Covid-19 and on the FDA’s experience with Covid-19 antibody tests. Supplement to the New England Journal of Medicine, Vol. 384, No. 7.
