Question

Who has developed the smallpox vaccination ?

Answer 1

developed by Edwerd Jenner in 1796

Answer 2

Smallpox vaccine, the first successful vaccine to be developed, was introduced by Edward Jennerin 1796. He followed up his observation that milkmaids who had previously caught cowpox did not later catch smallpox by showing that inoculated cowpox protected against inoculated smallpox....

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