Probably one of the most famous pandemics is the Bubonic Plague or the Black Death. I was most familiar with the plague that swept Europe in the 1340s (primarily from The Doomsday Book by Connie Willis. One of my favorites and one I reread almost once a year.)

But recent scholarship has discovered Yersina Pestis in Bronze Age Samples. This is a very old disease. The oldest human sample is 5000 years old but it is now estimated that the organism is probably 7000 years old. Wow. It is thought that the disease originated in Northern Eurasia but one of the Bronze Age samples is from England so the disease was already traveling.

But most of the graves found so far are individuals, not mass graves. What happened?

Well, the theory put forth in BBC History, Vol 23, is that the spread of the disease coincided with the rise of the Mongol empire in the thirteenth century. As they spread out, reaching even Italy, they carried some of their own provisions with them. Guess what loves grain? Rodents.

It has been known for some time that rodents and fleas were the disease’s vectors.

One of the goods Italy was importing was grain.

COVID traveled via airplanes. The Black Plague traveled by ship as goods and people went from country to country. It returned in waves and one estimate posits that half the population in Europe died. Certainly entire villages were wiped out.

The disease is still around and still lethal without treatment.