Who among the following invented the small pox vaccine?
A
Robert Koch
B
Edward Jenner
C
Robert Hooke
D
Louis Pasteur
Correct Answer: 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.