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Medical history: Who invented the smallpox vaccine — the first successful vaccine in medical science? Identify the pioneering physician who developed vaccination using cowpox material. Choose the correct name.

Difficulty: Easy

Edward Jenner
Louis Pasteur
Robert Koch
Alexander Fleming

Correct Answer: Edward Jenner

Explanation:

Given data

Select the inventor of the smallpox vaccine.

Concept / Approach
Edward Jenner pioneered vaccination in 1796 by using cowpox to confer immunity to smallpox.

Why others are incorrect
Pasteur: rabies vaccine; Koch: bacteriology (TB bacillus); Fleming: penicillin.

Final Answer
Edward Jenner.

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