Problem is that the so called ‘Black Death” most probably was NOT bubonic plague, but a virus more akin to a hemorrhagic virus (similar to Ebola/ Marburg), as evidenced by
Mike Bailie in his book “New Light on the Black Death”. The bubonic plague is well understood and does not fit the description and modes of transmission shown by the ‘Black Death’.
They (as in the power structure and it’s scientific research arm) most likely are aware of that fact, so another “horse before the cart” scenario is in the making.