Full Video |11:43

Full Video |11:43

Discusses the science behind vaccines and the immune system. The program explains how the immune system defends the body from diseases by recognizing pathogens and developing immunity to future attacks. It explores the steps of the scientific method that were used when developing the smallpox vaccine and explains that some diseases are deadly and difficult for the body to develop immunity to on its own. Vaccines use antigens, a part of a disease which does not cause infection, to help the body learn how to fight pathogens if it encounters the disease. Vaccines have helped eradicate several deadly and dangerous diseases including smallpox, measles, and polio.

©2017 Mazzarella Educational Media| CC| Grade(s) 3-5, 6-8

Related Topics

  • adaptive immune system
  • Albert Sabin
  • animals
  • antibody
  • antigen
  • B-cells
  • bacteria
  • blood
  • cells
  • community immunity
  • conclusion

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