Thrombotic Thrombocytopenia after Ad26.COV2.S Vaccination — Response from the Manufacturer

A case report by Muir et al.1 describes thrombosis, including cerebral venous sinus thrombosis (CVST), associated with severe thrombocytopenia and disseminated intravascular coagulation in a recipient of the Ad26.COV2.S vaccine (Johnson & Johnson/Janssen) against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Among the more than 75,000 participants in the clinical trial […]