Introduction   WHAT IS “VITT”?   Vaccine-induced Immune Thrombotic Thrombocytopenia (VITT) is “a newly described syndrome” “characterized by new onset thrombocytopenia [i.e., low blood platelet count] and acute venous or arterial thrombosis [i.e., blood clot], including at unusual sites such as the cerebral venous sinus, with onset of symptoms approximately […]