NEJM This Week — January 20, 2022
Featuring articles on a randomized closed-loop trial in very young children with diabetes, microbiome therapy for C. difficile infection, secondary prophylaxis for latent rheumatic heart disease, targeting mutant HER2 in non–small-cell lung cancer, urinary sodium and potassium and cardiovascular risk, and on aesthetic distance and empathy; a review article on rapid diagnostic testing for SARS-CoV-2; a case report of a man with a recurrent left pleural effusion; and Perspective articles on research participation and diversity.