Vaccination

• Vaccination:

  1. Injecting small amounts of dead or inactive pathogens that carry antigens
  2. Stimulates white blood cells to produce antibodies
  3. If same pathogen enters body, white blood cells respond rapidly to produce correct antibodies, preventing infection
• Advantages of vaccination:

  • Helped control common communicsble diseases in UK
  • Big outbreaks of disease ( epidemics) prevented if large percentage of population is vaccinated ( herd immunity)
• Disadvantages of vaccination:

  • Don't always give immunity
  • Bad reaction of vaccine