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
[Maximum number: 3]
Tuberculosis (TB), influenza and polio are examples of infectious diseases.
Polio is a serious viral disease affecting young children. In 1996, polio caused paralysis in more than 75000 children across Africa. A long-term vaccination programme allowed the World Health Organization (WHO) to declare that Africa was largely free of polio in 2020.
Explain how vaccination programmes can help to control the spread of infectious diseases, such as polio.
for children, allow people for polio allow disease
any three from:
1 ref. to vaccination programme aims to vaccinate, whole populations / large numbers ;
2 vaccine allows (most), children / people, to have an immune response (against antigens of the disease organism) ;
3 develop, long-term immunity I artificial active immunity / memory cells against, polio / disease ;
4 idea that vaccinated individuals cannot, transmit virus / transmit polio / infect others ;
5 herd immunity / described ;
6 AVP ;
e.g. ref. to vaccination programme aims to break the transmission cycle
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