SMALLPOXVACCINE
Smallpox vaccine
The smallpox vaccine was the first successful vaccine to be developed. The process of vaccination was first publicised by Edward Jenner in 1798, who acted upon his observation that milkmaids who caught the cowpox virus did not catch smallpox. Before widespread vaccination, mortality rates in individuals with smallpox were high—up to 35% in some cases.The above text is a snippet from Wikipedia: Smallpox vaccine
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