>>13371987 PB AstraZeneca vaccine & blood clots
The letter from Doctors for Covid Ethics seems to describe the mechanism by which blood clots could occur. Basically when the spike protein attaches to the receptor on the platelets of individuals with prior exposure to any coronavirus activation occurs with potential for resulting in disseminated intravascular coagulation to occur. It's technical but worth a read IMHO.
https://doctors4covidethics.medium.com/urgent-open-letter-from-doctors-and-scientists-to-the-european-medicines-agency-regarding-covid-19-f6e17c311595