I don't know about the exact particulars of that, but from the covid death tolls I've seen, the 1st shot looks (by the bogus statistics they collect, anyway, which are certainly not accurate) like an actual benefit (only in terms of catching the coof), but the 2nd is definitely where things fall off a cliff and the vaccinated are several times more likely to catch it than either the unvaccinated or those with only the 1st shot.

Plenty of folks have dropped dead on the spot from the 1st shot, and plenty took 3-4 months to die of a brain clot. All in all, of course I have to say the obvious and that the 2x is somehow much more than double the risk of death. I think the 2nd triggers some really bad stuff that the 1st sets up.