I saw this news yesterday, referencing a behind-the-pay-wall WSJ article. Since the WSJ makes the first few paragraphs freely available, I guess I can republish those here. Since I've done posts on the vaccines, I feel that I have a responsibility to update.
Here's the down and dirty. We're talking about AstraZeneca and J&J, which are adenovirus medications.
The German scientist in question says that the clotting problem can be traced to a common preservative in the vaccine, EDTA:
In Germany, one researcher thinks he has found what is triggering the clots. Andreas Greinacher, a blood expert, and his team at the University of Greifswald believe so-called viral vector vaccines—which use modified harmless cold viruses, known as adenoviruses, to convey genetic material into vaccine recipients to fight the coronavirus—could cause an autoimmune response that leads to blood clots. According to Prof. Greinacher, that reaction could be tied to stray proteins and a preservative he has found in the AstraZeneca vaccine.
“Prof. Greinacher and his team has just begun examining Johnson & Johnson’s vaccine but has identified more than 1,000 proteins in AstraZeneca’s vaccine derived from human cells, as well as a preservative known as ethylenediaminetetraacetic acid, or EDTA. Their hypothesis is that EDTA, which is common to drugs and other products, helps those proteins stray into the bloodstream, where they bind to a blood component called platelet factor 4, or PF4, forming complexes that activate the production of antibodies.
The inflammation caused by the vaccines, combined with the PF4 complexes, could trick the immune system into believing the body had been infected by bacteria, triggering an archaic defense mechanism that then runs out of control and causes clotting and bleeding.
A number of things to note.
I'm not a scientist. Nevertheless, this explanation sounds extremely similar to the explanation offered by Sucharit Bhakdi and other experts in the field--whom I've quoted at great length fairly recently. It all comes down to the proteins, especially the spike protein, getting into the blood stream.
Bhakdi, to the best of my knowledge, doesn't explain exactly how the spike proteins from the vaccine get into the blood stream to bind with platelets--he appears to regard this as basically an inevitable occurrence in the circumstances. Greinacher's claim is that he has identified how that happens. However, the article presents the Greinacher's EDTA explanation as simply an "hypothesis"--not a proven fact. If we accept that hypothesis, everything that happens next--once the protein gets in the bloodstream--appears to follow Bhakdi's explanation precisely.
One difference is that Bhakdi maintains that the same principle will also apply to mRNA vaccines--that it's only a matter of time before we see similar results. In other words, Bhakdi appears to maintain that the proteins will enter the blood stream and he specifically maintains that it doesn't matter whether that happens via mRNA vaccines or adenovirus vaccines. The question then comes down to what will trigger the dangerous immune system response--which occurs in some recipients but not in others. Hey--I'm not a scientist.
Another researcher in this area, working on the blood clotting problem with vaccines and who appears to have no dog in the fight, offers this caution:
Prof. John Kelton of McMaster University in Canada, whose outfit runs Canada’s reference lab for testing patients with blood-clotting symptoms after vaccination, said the lab replicated some of Prof. Greinacher’s research and confirmed his findings.
Yet the cause was unclear. “[Prof. Greinacher’s] hypothesis could be right, but it could also be wrong,” Prof. Kelton said.”
So, the causation--which, after all, is the key--remains unclear.
Have you ever wondered why it takes so long to develop vaccines? You thought it was all really simple after reading about Edward Jenner and cowpox and smallpox in high school? Wonder no more! Instead, wonder who thought releasing these vaccines with so little testing behind them was a good idea?
Some people say that pharma companies make more money off newly developed vaccines than they do from off label medications whose patents have expired. But I'm not a scientist.