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What Factors Significantly Reduced 'Infectious' Diseases? Series
Objective research into 'infectious' diseases in the 19th (1800s) and 20th (1900s) centuries leads to the undeniable conclusion that far before vaccination become widespread and part of national policy, these diseases were already in significant decline. This was due to social factors such as better sanitation, better nutrition and clean water availability from early 1900 onwards.
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