Unit 3- Immunisation Flashcards
1
Q
What antigens are used in vaccines?
A
Inactivated pathogen toxins.
Dead pathogens.
Parts of pathogens.
Weakened pathogens.
2
Q
What is an adjuvant?
A
A substance which makes the vaccine more effective, enhancing the immune response.
3
Q
What is herd immunity?
A
Herd immunity occurs when a large percentage of a population are immunised.
4
Q
What causes difficulties to arise in widespread vaccination?
A
Poverty or when vaccines are rejected by a percentage of the population.
5
Q
What is antigenic variation? (Influenza)
A
When a pathogen changes their antigens, meaning memory cells are not effective against them.
