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Old 23rd Feb 2019, 20:21
  #46 (permalink)  
layman
 
Join Date: Jul 2002
Location: Canberra
Posts: 129
To understand the impact of disease on an unprotected population you could do worse than read about the 'great dying' in the Americas.

As a starting point, https://en.m.wikipedia.org/wiki/Nati..._and_epidemics

Estimates vary, but the 'average' is that about 90% of the pre-European population in north, central & south-America, died- about 55 million people.
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