I believe they are infecting specific vials, with specific agents. A multitude of angles for human elimination, and they can brag about which ones worked best. They seem to be well on their way in the Ukraine, I hear with the avian/H5N1. If people dropped like flies at every injection it would create panic, so the tactic is to create doubt about bad vaccines and trust in their product, then kill you with it. Let's not forget about our friends in Naval Intelligence with their barium and aluminum squirters