Vaccination (OCR GCSE Biology A, Combined (Gateway Science Suite)): Flashcards
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Practise the cards
13 cards from this deck
Purpose of vaccination
Purpose of vaccination
Makes individual immune to disease before infection
What is herd immunity?
What is herd immunity?
Immunising large proportion of population reduces pathogen spread
Speed of antibody production in secondary infection
Speed of antibody production in secondary infection
Much quicker than primary infection
What does vaccination replicate?
What does vaccination replicate?
The first infection
Vaccine content
Vaccine content
Dead or inactivated form of pathogen
Antibodies produced by vaccine
Antibodies produced by vaccine
Complementary to antigens on pathogen
Disease eradicated by vaccination
Disease eradicated by vaccination
Smallpox
Disease reduced by vaccination
Disease reduced by vaccination
Rubella
Epidemic
Epidemic
Lots of cases in an area
How epidemics prevented
How epidemics prevented
Through herd immunity
Vaccination disadvantage: effectiveness
Vaccination disadvantage: effectiveness
Not always effective in providing immunity
Vaccination disadvantage: reactions
Vaccination disadvantage: reactions
Bad reactions like fevers (very rare)
Why no symptoms in secondary infection
Why no symptoms in secondary infection
Antibodies made quicker, pathogen destroyed before symptoms