It was more than just that they found the earliest known, the virus itself was a parent form that hadn’t mutated, pristine. So it’s pretty much a smoking gun that those Kygrsystanfijdfls were the first effected. I guess since it ended up hittting everyone else eventually anyway they got off easy dying before before all the economic and social disasters hit.
FYI...
Yersinia pestis is a bacterium...not a virus.
Freegards.