“Researchers in Germany report substantial amounts of human and viral proteins in AstraZeneca’s coronavirus vaccine. Although the study is not yet peer reviewed, it suggests that these impurities could be linked to the strong reaction seen in many people two to three days after their jab. The preprint also states that it is conceivable, albeit doubtful, that these proteins could be linked to rare blood-clotting events.
The study’s lead researcher, Stefan Kochanek from Ulm University, says he was surprised by the quantities of proteins detected by mass spectrometry in three vaccine lots. ‘At least half of the proteins present in the vaccine are of human origin,’ Kochanek says. One vaccine lot contained about 12.5μg of virus in one dose and about 22μg of non-virus proteins.”