8th grade ch. 5 sec. 3 preventing infectious diseases

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  • 1. Ch. 5 Sec. 3 Preventing Infectious Diseases
  • 2. immunity
    • body’s ability to destroy pathogens before they can cause disease
  • 3. 2 kinds of immunity 1. active 2. passive
  • 4. 1. active immunity
    • when person’s own immune system produces antibodies in response to presence of pathogen
    • vaccination (immunization)
    • usually lasts for many years- sometimes for life
  • 5.  
  • 6.  
  • 7.  
  • 8. vaccination
    • process by which harmless antigens- deliberately introduced into person’s body  creates active immunity
    • given by injection, mouth, nasal spray
  • 9.  
  • 10.  
  • 11. Franklin D. Roosevelt in a wheelchair
  • 12.  
  • 13. 2. passive immunity
    • occurs when antibodies that fight pathogen come from another source rather than from person’s own body
    • only lasts few months
  • 14.  
  • 15.
    • chemical that kills bacteria or slows their growth without harming body cells
    • does NOT work on viruses
  • 16.  
  • 17. Name that immunity
  • 18. active immunity
    • when person’s own immune system produces antibodies in response to presence of pathogen
  • 19. passive immunity
    • occurs when antibodies that fight pathogen come from another source rather than from person’s own body
  • 20. passive immunity
    • Only lasts few months
  • 21. active immunity
    • can last a lifetime
  • 22. active immunity
    • when person’s own immune system produces antibodies in response to presence of pathogen
  • 23. passive immunity
    • occurs when antibodies that fight pathogen come from another source rather than from person’s own body
  • 24. passive immunity
  • 25. passive immunity
    • only lasts few months