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3.1 Communicable diseases

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Question 57
F

In one country the percentage of children vaccinated against measles fell from 92% in 2015 to 84% in 2022. The number of cases of measles increased over the same period.

a.

Explain why a fall in the percentage of children vaccinated causes an increase in the number of cases of measles.

[3]
b.

Some children cannot be vaccinated for medical reasons. Explain why these children are at greater risk when the percentage of children vaccinated falls.

[2]
Markscheme

3.1 Communicable diseases Questions

  1. GCSE
  2. /Biology
  3. /3.1 Communicable diseases

176 exam-style questions on AQA GCSE Biology 3.1 Communicable diseases, covering 3.1.1 Communicable (infectious) diseases, 3.1.2 Viral diseases, 3.1.3 Bacterial diseases, 3.1.4 Fungal diseases, 3.1.5 Protist diseases, 3.1.6 Human defence systems, 3.1.7 Vaccination, 3.1.8 Antibiotics and painkillers, and 3.1.9 Discovery and development of drugs. Each one has a worked solution and a mark scheme showing where the marks go.

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