Which begs the question, how do they know that it was vaccine induced blood clots and not covid or any other possible cause of blood clots?
Since at the same time mass vaccination rolled out, essentially all lockdowns were lifted and at least speaking for myself, that is when I caught Covid (and got sick in general again, no colds for almost two years was nice).
It would take a specific study isolating people that got the vaccine but never tested positive for COVID, which of course is open to some misreporting (1/3 of COVID cases are asymptomatic and most likely never identified).
Since at the same time mass vaccination rolled out, essentially all lockdowns were lifted and at least speaking for myself, that is when I caught Covid (and got sick in general again, no colds for almost two years was nice).