Multiple choice

Directions: In which year given discovery/invention was made:

Vaccination

  1. 1882

  2. 1880

  3. 1912

  4. 1796

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Edward Jenner developed the smallpox vaccine in 1796 after observing that milkmaids who had cowpox seemed immune to smallpox. He tested his theory by inoculating a young boy with cowpox material, establishing the principle of vaccination.

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