We are beginning to get population-level data as vaccines are rolling out worldwide.
Overall, the research is beginning to emerge on potential relationship of cerebral venous sinus thrombosis (CVST) with thrombocytopenia and adenoviral vector COVID-19 vaccine. A case series of 12 U.S. patients who received J&J/Janssen vaccine and developed CVST and thrombocytopenia as reported to VAERS between March 2 and April 21, 2021 and published on April 30, 2021 looked at the characteristics of these patients. It found following with respect to the patient characteristics who received this type of vaccine and developed subsequent CVST with thrombocytopenia:
Updated: May 5, 2021