Edward Jenner was an English doctor who lived in the 18th and 19th ____. He is famous for his ____ of ____, which have saved millions of lives around the world. Jenner grew up in ____ England and became interested in medicine at a young age. He studied medicine in London and later returned to his hometown to practice. There, he noticed that people who had contracted a disease called cowpox, which was common among ____ workers, did not get sick with a more dangerous ____ called smallpox. This observation led Jenner to the idea of ____ infecting people with cowpox to protect them from smallpox. In 1796, Jenner conducted an ____ where he took ____ from a cowpox sore and ____ it into a young boy's arm. The boy got a mild case of cowpox, but when Jenner later exposed him to smallpox, he did not ____ sick. This experiment showed that cowpox could be used to ____ smallpox, and Jenner called this process ____, which comes from the Latin word for cow, "vacca". Jenner's ____ was met with skepticism and ____ at first, but over time, his method of vaccination became ____ accepted and was used to prevent smallpox around the world. In fact, smallpox was ____ eradicated, meaning it no longer exists anywhere in the world, thanks in part to Jenner's work. Jenner's discovery of vaccination has had a profound impact on medicine and public ____. It has saved ____ lives and prevented the spread of deadly diseases. Today, vaccines are still used to ____ a wide range of ____, from measles to polio to COVID-19. Jenner's legacy lives on as a pioneer in the field of immunology, and his work has paved the way for countless ____ advancements in the centuries ____ his discovery.

Edward Jenner

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