inventor of small pox vaccine
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robert hook
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louis pasteur
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edward jenner
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robert koch
C
Correct answer
Explanation
Edward Jenner developed the smallpox vaccine in 1796. He observed that milkmaids who had contracted cowpox were immune to smallpox and tested this theory by vaccinating a young boy. Louis Pasteur developed the rabies vaccine and germ theory, while Robert Hooke discovered cells and Robert Koch identified TB and cholera bacteria.