Question

who invent vaccine for the first time and when ?​

Answer 1

Answer:

The smallpox vaccine, introduced by Edward Jenner in 1796, was the first successful vaccine to be developed.

Answer 2

Answer:

It was also the first disease for which a vaccine was produced. Although at least six people had used the same principles years earlier, the smallpox vaccine was invented in 1796 by English physician Edward Jenner. He was the first to publish evidence that it was effective and to provide advice on its production

Explanation:

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