Featuring articles on wolbachia-infected mosquito deployments for dengue, Ad26.COV2.S vaccine efficacy against Covid-19, thrombotic thrombocytopenia after ChAdOx1 nCoV-19 vaccination, variant SARS-CoV-2 infection after vaccination, and on diabetes treatment and control in U.S. adults from 1999 to 2018; a review article on recent advances in the treatment of melanoma; a case report of a woman with pain, swelling, and ecchymosis of the left arm; and Perspective articles on HIPAA at 25, on HIPAA and the leak of “deidentified” EHR data, and on what did I sign up for? Supplement to the New England Journal of Medicine, Vol. 384, No. 23.