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A new vaccine against an infectious disease was developed - HSC - SSCE Biology - Question 9 - 2022 - Paper 1
Question 9
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 differen... show full transcript
Worked Solution & Example Answer:A new vaccine against an infectious disease was developed - HSC - SSCE Biology - Question 9 - 2022 - Paper 1
Step 1
The vaccine offers more protection to younger than those over 65.
Answer
From the graph, we can observe that the effectiveness of the vaccine decreases over time for all age groups. However, the age group 16–44 years consistently shows higher effectiveness compared to the older age groups. This indicates that the vaccine offers more protection to younger individuals than to those aged 65 and over.