Gce Model Questions Vol1 2023 Biology Question 4
Practice objective / multiple choice question 4 from the 2023 Gce Model Questions Vol1 Biology examination.
Disease X has a basic reproduction number \(R_{0}=2.8\) and Disease Y has \(R_{0}=1.6\). A community of 10 000 people will vaccinate against each disease. The vaccine for Disease X is 85 % effective and for Disease Y is 95 % effective.\n\n(a) Calculate the minimum number of individuals that must be successfully immunised (i.e., vaccinated and protected) for each disease to achieve herd immunity.\n(b) If the community can only vaccinate 4 000 people, which disease could still cause an outbreak? Assume no natural immunity.
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This is Gce Model Questions Vol1 2023 Biology Question 4. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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