If it was an experiment, it's safe to assume that those "in the know" received a placebo shot, perhaps some inert saline solution.
Biden’s photo op Jab injection was clearly faked, and was done in a fake “Oval Office”, as many pointed out.
When these shots rolled out in early 2021, they publicly announced them as Experimental Gene Therapy.
That was my No.
I wonder if/when xiden’s handlers will fault the jab for his decline & cancer, claiming that they were all lied to. /s
[tin hat off]
Disclosure: I’m in the camp which believes they all got placebos