Frequency of Thrombocytopenia and Platelet Factor 4/Heparin Antibodies in Patients With Cerebral Venous Sinus Thrombosis Prior to the COVID-19 Pandemic
Study (n=865) found baseline thrombocytopenia was uncommon, and heparin-induced thrombocytopenia and platelet factor 4/heparin antibodies were rare in patients with cerebral venous sinus thrombosis prior to the COVID-19 pandemic suggesting possible association with COVD vaccines.
Source:
Journal of the American Medical Association