Vaccine for smallpox was developed by

The vaccine for smallpox was developed by Edward Jenner. In 1796, Jenner conducted an experiment using material from a cowpox lesion to inoculate a young boy. The boy developed immunity to smallpox as a result. Jenner’s work demonstrated that exposure to a milder disease like cowpox could provide immunity to a more severe disease like smallpox. This discovery led to the development of the smallpox vaccine, which became the first successful vaccine in history. Jenner’s work laid the foundation for modern immunization and played a crucial role in the eventual eradication of smallpox worldwide. His contributions to medicine are considered a significant milestone in the history of public health and preventive medicine.