Various other comments you've composed across other threads speaks volumes about the volumes of volumes you say you have read, in order to be wiser than a mere worldtraveler.
If there is any “bizarre imagined gotcha of a handful of years,” it not mine. It is ours, including you, a Doktor Allwissend.
These last two years of the pandemic — “event,” scamdemic, case-demic, and so on — is less than a handful of years. And you have so much about which to opine because you've read about black rats, which are part of our world today. Gee whiz, rats carry plague. Even today, so let's just bring your little equation across to today. Six hundred plus years of plague! Arithmeric based on assumptions and statistics and all.
Few if any will look back at this thread, so neither of us doing more than a silly back-and-forth. But to adopt a superior academic stance seems a pretense to me, as if you want “appeal to authority” to anoint you as an authority. Rattus rattus, indeed.
I'll just cite "official" statstics, deaths and populations and such.
Yes, silly. I hope your reading is underway.