Here's a possible explanation for the bloodclots. Doesn't sound good though.
The delivery mechanism means the vaccines send the DNA gene sequences of the spike protein into the cell nucleus rather than the cytosol fluid found inside the cell where the virus normally produces proteins, Marschalek and other scientists said in a preprint paper released on Wednesday. Once inside the cell nucleus, certain parts of the spike protein DNA are spliced, or split apart, creating mutant versions, which are unable to bind to the cell membrane where important immunisation takes place. The floating mutant proteins are instead secreted by cells into the body, triggering blood clots in roughly one in 100,000 people, according to Marschalek’s theory. In contrast, mRNA-based vaccines, such as the jabs developed by BioNTech/Pfizer and Moderna, deliver the spike’s genetic material to the cell fluid and it never enters the nucleus. “When these . . . virus genes are in the nucleus they can create some problems,” Marschalek told the Financial Times.
Here's the link to the article: https://www.zerohedge.com/covid-19/german-scientist-discovers-what-causes-rare-blood-clots-some-astrazeneca-jab-recipients