Who is the Father of Vaccination?

Correct option is D

Sol. Edward Jenner is known as the "Father of Vaccination" for developing the smallpox vaccine in 1796. He observed that milkmaids who had been infected with cowpox were immune to smallpox, leading him to develop the first vaccine. His discovery laid the foundation for modern immunization programs, eradicating smallpox globally.
Explanation of Each Option:
· Kary Mullis: Incorrect; developed the polymerase chain reaction (PCR) technique.
· Florence Nightingale: Incorrect; a pioneer in nursing and hospital sanitation, not vaccination.
· Robert Koch: Incorrect; discovered the causative agents of tuberculosis and cholera, but did not develop vaccines.
· Edward Jenner: Correct answer; developed the first successful vaccine against smallpox.