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