Uh, Bubonic Plague is uh, carried by uh, fleas uh, on the backs of rodents. Uh, in the Middle Ages, probably black rats were most common and…. Ben: But the fleas were the actual culprits.

which is where the bubonic plague gets its name. Plague is rare, because thankfully, we have much better ways to control rodents these days. And unlike in the Middle Ages, millions of people don't ...

This is how the virus is believed to have wreaked havoc in the Middle Ages, when the a pandemic known as the Black Death ...