IB Biology HL 3.2.17 Herd immunity Question Bank
Practise IB Biology SL/HL 3.2.17 by applying herd immunity concepts to exam-style questions.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- identify the relevant biological structure, process or evidence
- apply the correct biological mechanism to the question
- evaluate the result using data, adaptation or ecological reasoning
C3.2.17—Herd immunity question 1
[Maximum number: 1]
A vaccine against meningitis A, a deadly bacterial disease, has eradicated the disease in 16 African countries since 2010. However, meningitis A still exists in those countries where people are unvaccinated.
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What are the possible aims of epidemiological research such as this?
Test vaccine effectiveness
Identify distribution of disease
Identify cause of disease
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A
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