We often hear indigenous peoples died from disease introduced by European settlers in North and South America. If indigenous peoples there were susceptible to eradication by unfamiliar disease why is the same not true of disease and death to settlers? Or is it true but more easily overcome?
In: Biology
Short answer is mostly because the old world had higher popularion densities and more domesticated animals in close contact with humans.
[Here](https://www.reddit.com/r/history/s/VoZelRMBOK) is another thread from a few years ago with a lot more info.
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