Vaccinations

• 1.Inject a small amount of the dead or inactive pathogen.

  2.White blood cells called lymphocytes produce specific antibodies.

  3.These immobilise the pathogen to allow phagocytosis.

  4.Memory cells stay in the blood.

  5.If you become re-infected, memory white blood cells produce large quantities of specific antibodies taster.

  6.The pathogen is killed before you feel ill.

  7.You are immune to that particular strain of the pathogen.