Hello! I'm a current M.A. in History candidate who is focusing his research on medieval Scandinavia. A question popped into my head a few days ago and I've scoured the internet and all of the books I own trying to find an answer for it.

Essentially, we know that the Vikings interacted with numerous cultures that were foreign to them beginning in the late 8th century and did so virtually until the advent of Christianity ca. 1000. Is there any record of the Vikings transmitting diseases to any of these cultures?

I'm thinking in terms of the Kievan Rus' interactions with the 'Abbasid Caliphate, the Greenlanders interactions with the First Nations peoples of North America, and the Danish/Norwegian interaction with the Anglo-Saxon, Irish, and Scots peoples.

Thanks for reading this. I am eager to hear any theories as well as concrete examples. Thanks again!