Gce Model Questions Vol1 2022 Agricultural Science Question 2
Practice objective / multiple choice question 2 from the 2022 Gce Model Questions Vol1 Agricultural Science examination.
In a cattle herd of 200 animals, a contagious disease has a basic reproduction number \(R_0 = 2.5\). A vaccine is 80 % effective. (a) What minimum proportion of the herd must be vaccinated to achieve herd immunity? (b) If only 120 animals can be vaccinated, will herd immunity be achieved? Give the proportion (as a decimal) and answer "Yes" or "No".
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About This Question
This is Gce Model Questions Vol1 2022 Agricultural Science Question 2. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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