2022HSCMultiple choice

Q9

1 mark

Question

A new vaccine against an infectious disease was developed. The effectiveness of the vaccine in preventing infection in humans was plotted over time in three different age groups.

Which of the following is a valid conclusion that can be drawn from the data in the graph?
A. The vaccine is ineffective after six months.
B. The younger the person the more effective the vaccine.
C. The younger the person, the faster the immunity to infection declines.
D. The vaccine offers more protection to younger people than those over 65.

Uncropped source page 5 for question 9; requires human review and cropping — Reviewed visual · source page 5

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Syllabus alignment

Module 7 · Infectious Disease

Prevention, Treatment and ControlInvestigate prevention through hygiene, quarantine, vaccination, campaigns, pesticides and genetic engineering.

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