Preventing and Treating Infectious Disease

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Vaccinations helps your body to be immune to some diseases.

Immunisation involves injecting dead or inactive pathogens into the body. These carry antigens so even though they are harmless, they still trigger an immune response. The white blood cells then produce antibodies to attack them.  

Some of the white blood cells will remain in the blood as memory cells, so if live pathogens of the same type ever appear, the antibodies to kill them will be produced immediately. 

Active immunity

  • Active immunity is where the immune system makes its own


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