Question

who developed vaccine for first time???​

Answer 1

Answer:

The first vaccine was introduced by a British physician, Edward Jenner, in 1796. He used the cowpox virus (vaccinia) to confer protection against smallpox, in humans.

Explanation:

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Answer 2

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The first vaccine was introduced by a British physician, Edward Jenner, in 1796. He used the cowpox virus (vaccinia) to confer protection against smallpox, in humans.

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