Question

Q15.Who discovered vaccine first time?

a)Edward Jenner

b)Edward Einstein

c)Robert Hoek

d)Alexander Fleming​

Answer 1

Answer:

option a

Explanation:

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Answer 2

Edward Jenner

The smallpox vaccine, introduced by Edward Jenner in 1796, was the first successful vaccine to be developed. He observed that milkmaids who previously had caught cowpox did not catch smallpox and showed that inoculated vaccinia protected against inoculated variola virus