This is anecdotal but what I am seeing with these vax is it seems to find the weaknesses of the human host and exploit those. Ex. Patient with history of kidney stones gets the 2nd dose and hours later is in the ER with abdominal pain that is similar to their pain from past stones. They get an xray and pt has urethral stone with hydronephrosis. Now, did the vax cause the stone to dislodge from the kidney? Who knows but it seems awful odd. I don't know how it takes for a stone to lodge in the ureter and cause hydronephrosis.