Cleve Clin J Med. 2021 May 6. doi: 10.3949/ccjm.88a.ccc078. Online ahead of print.
Vaccine-induced thrombotic thrombocytopenia (VITT) has been reported after vaccination with the AztraZeneca ChAdOx1 nCoV-19 and the Johnson and Johnson Ad26. COV2.S vaccines. This manuscript provides a brief overview of reported cases, clinical and laboratory features, and current understanding of the pathogenesis of VITT. The author also poses unananswered questions and identifies directions for future study.