Covid Research: Fibrin "binds to the SARS-COV-2 spike protein" forming clots that "drive systemic thromboinflammation and neuropathology" and it happens "independently of active infection."
A significant new paper published in Nature and this author has worked on explaining it to us. Definitely worth reading and bookmarking for reference.
https://readwise.io/reader/shared/01j6e493r53anare7prqh9e6r2/