If I were to travel back in time to Medieval Europe, do I carry any diseases that they weren't immune to, and would I kill them accidentally?
I actually have European ancestors who survived the plague and because of this, I have been told that I am more immune to diseases that broke out back then and that does make sense. So I can imagine that the chances of me contracting the plague wouldn't be as high per se. But now, my concern is what I might be carrying. I am not a medical professional so I'm unsure. What are the sicknesses we carry today that they didn't have, and would I carry these and spread them to people back then, therefore killing them? I think our immune systems are stronger because of vaccinations and they didn't have those in the 14th Century so I would assume they'd be a lot more susceptible to diseases we are actually immune to. Am I correct? Accidentally killing them would be a flippin disaster.
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The only modern contagious disease I can think of that wasn't around then is HIV. But you'd probably know if you had it, and it's not easily transmitted (unprotected sex, and not all kinds, and sharing blood, stuff like that).
And of course cold or flu viruses, since they mutate often.
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