The smallpox vaccine was created by Edward Jenner , an English physician who developed it in 1796 using material from cowpox lesions to protect against smallpox.

Who Edward Jenner Was

Edward Jenner (1749–1823) was an English doctor and scientist often called the “father of immunology” because his work pioneered the modern concept of vaccination. His development of the smallpox vaccine is considered the world’s first successful vaccine and laid the foundation for later vaccines against many other diseases.

How He Created the Vaccine

Jenner observed that milkmaids who caught the mild disease cowpox did not later get deadly smallpox. In 1796, he tested this idea by inoculating an eight‑year‑old boy, James Phipps, with cowpox material and later exposing him to smallpox, showing that the boy was protected.