3.6 - Vaccinations and Immunisation

• What are advantages of vaccines?

  • Protection from diseases
  • Control of common diseases
  • Prevents outbreaks and epidemics
  • Herd immunity
• What are disadvantages of vaccines?

  • Don’t always grant full immunity
  • Bad reactions
• What does a vaccine contain?

  Small quantities of a dead, weakened, or inactive form of a pathogen
• Can vaccines be made against both bacterial and viral diseases?

  Yes
• How do vaccines work?

  They expose us to the antigens of a pathogen so that er can develop immunity to it