CAIE A-Level Biology AS 11.2.6 Vaccination Programmes Questions
Explain vaccination-programme purposes and operation using evidence from each question and mark scheme.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- Explain the purpose and operation of vaccination programmes in populations.
CAIE A-Level Biology AS 11.2.6 Vaccination Programmes Questions question 1
Measles is an infectious disease caused by a virus.
The graph shows the number of cases of measles each year in a country before and after a vaccine was introduced.
What could have caused the decrease in the number of cases of measles after vaccination was introduced?
vaccines provided artificial active immunity in people
vaccines provided artificial passive immunity in people
fewer people are able to act as hosts for the virus
key
✓
×
✓
x
✓
✓
✓ = yes
×
✓
x
no
✓
×
×
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