Both the COVID vaccine and the COVID infection have been documented to provoke increased blood clotting [thrombosis] (Biswas et al., 2021; Lundstrom et al., 2021). Viral infections, in general, have been found to cause coagulopathies resulting in abnormal blood clotting (Subramaniam and Scharrer, 2018). Here is more information.

https://www.lewrockwell.com/2021/10/no_author/canceling-the-spike-protein/