HHB 3.7 Immunisation Flashcards

Flashcard
•
others
•
11th Grade
•
Hard
Vivienne Snedden
FREE Resource
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6 questions
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1.
FLASHCARD QUESTION
Front
Herd immunity
Back
occurs when a large percentage of a population is immunised.
reduces the spread of diseases
Non-immune individuals are protected as there is a lower probability they will come into contact with infected individuals.
2.
FLASHCARD QUESTION
Front
Adjuvant
Back
a substance which makes the vaccine more effective, so enhancing the immune response.
Antigens are usually mixed with adjuvants when producing the vaccine.
3.
FLASHCARD QUESTION
Front
Herd immunity threshold
Back
The number of individuals in a population that need to be immunised to prevent disease spread.
It depends on type of disease, effectiveness of vaccine & population density.
4.
FLASHCARD QUESTION
Front
Antigenic variation
Back
describes a pathogen changing their antigens so that memory cells are ineffective against the pathogen.
this happens with Influenza virus
5.
FLASHCARD QUESTION
Front
Immunity
Back
can be developed by vaccination using antigens from infectious pathogens, so creating memory cells.
6.
FLASHCARD QUESTION
Front
The Antigens used in vaccines can be...
Back
inactivated pathogen toxins,
dead pathogens, parts of pathogens and weakened pathogens.
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