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15 cards from this deck
Introducing small, safe amount of pathogen to stimulate immune response without causing illness
Inactive/dead pathogen or their antigens
Lymphocytes
Antibodies
Remember pathogen & produce antibodies quickly in future
Stimulate body's specific immune system
Still contain antigens immune system can recognise
Immunity without getting sick from disease
High % vaccinated reduces spread, protects vulnerable
Smallpox
Cheaper than treating diseases in long run
Sore arm, fever, fatigue (serious ones rare)
Not always 100% effective
Allergic reactions
Shows antibodies reacting with antigen in body/skin
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