In 1796, English doctor Edward Jenner made a groundbreaking observation. He noticed that milkmaids who had contracted cowpox (a mild disease) never seemed to catch smallpox (a deadly disease). Acting on this insight, Jenner deliberately infected an 8-year-old boy with cowpox, then later exposed him to smallpox. The boy remained healthy - the first successful vaccination had been performed.
This revolutionary discovery laid the foundation for one of medicine's greatest achievements: the complete eradication of smallpox in 1980, and the near-elimination of diseases like polio. Today, vaccination programs protect millions of lives worldwide through the power of adaptive immunity.
This introduction covers Edward Jenner and the Birth of Vaccination within Vaccination and Herd Immunity for GCSE Biology. How vaccines work, types of vaccines, population immunity, vaccination programmes It is section 1 of 15 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Vaccination and Herd Immunity
What do vaccines contain?
Explain how vaccination protects a person from getting a disease. [3 marks]