Last night there was a link posted to audio of an interview with a doctor or researcher who said they had found something similar, however not that it is in the water, but that there are components of snake venom in the vax. From a couple different snakes. Not straight up venom, some peptides or something like that, she said would certainly cause the clotting. I don't have sauce and don't know if it made notables.
Probably statistician or actuary confirmed anecdotal evidence.