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While I realize this doesn't answer your question in the narrow way that you frame it ("I do not believe that we can exclude accidental errors as a potential cause" as you put it), I'm offering this as a frame challenge to the theory that accidental i.v. injection is the main reason why STT occurred in those patients. There's a 2020-published study ...


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Yes. This recent Nature article mentions a few potential hypotheses for vaccine-related blood clots, including the hypothesis in question here: One possible factor affecting the safety of adenoviral vaccines is how they are administered. The COVID-19 vaccines are given as injections into muscle, but if the needle happens to puncture a vein, the vaccine ...


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