vaccinations

• • Immunisation is the process in which the body reacts to a vaccine by going through the immune response producing memory cells for the specific antigen on a pathogen. Therefore, vaccinations prime the immune system to respond rapidly to a pathogen reducing the likelihood of infectio
• Vaccines contain cultures of micro-organisms that may be either: 

  •  living but attenuated (weakened), therefore harmless  
  • inactivated (dead)  
  • fragments of pathogens  
  • modified toxins  viral messenger RNA
• • Active acquired immunity – immunity developed naturally or artificially (vaccine) by a person being exposed to a live pathogen and developing a primary immune response
• • Passive acquired immunity – immunity that develops when antibodies are introduced into the body, without the person being exposed to a pathogen directly.