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Understanding Vaccines: How They Work and Their Historical Journey

Vaccines are crucial in preventing diseases by training the immune system to recognize pathogens. Through the introduction of weakened or inactivated forms of viruses, like cowpox with smallpox, vaccines stimulate the production of antibodies without causing illness. This process enables our bodies to combat actual infections effectively. In the first two years of life, several key vaccines, including Hepatitis B, MMR, and more, help build immunity against serious diseases. Explore the science behind vaccines and their significant impact on public health throughout history.

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Understanding Vaccines: How They Work and Their Historical Journey

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Presentation Transcript

  1. Aim: What does a vaccine do? Do now: What 2 proteins are involved with an immune response? How do they work?

  2. Vaccine history • During the 1700’s a scientist Edward Jenning thought it was curious that his milk maids did not get small pox (a virus that often infected people during the time) • He soon discovered that the milk maids originally got infected by Cow pox – a weaker form of small pox • He later infected one of his children with cow pox and found that he never got infected with small pox

  3. Vaccines • Vaccines are an injection of a weakened or dead pathogen, or the antigens it produces • Your immune system builds up antibodies against the these pathogens without getting sick from them • When the ‘real’ virus comes along, your body is able to defeat it before it can harm you

  4. Vaccines given in the first 2 years of life: Hepatitis B vaccine: Hib vaccine: Inactivated polio vaccine: Pneumococcal vaccine: Rotavirus vaccine: Hepatitis A vaccine: Influenza vaccine: MMR vaccine: Varicella vaccine: Meningococcal vaccine: Human papillomavirus vaccine:

  5. Exit question • How do vaccines work?

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