Igcse Model Questions Vol1 2020 Biology Question 40
Practice objective / multiple choice question 40 from the 2020 Igcse Model Questions Vol1 Biology examination.
In a community of 10,000 people a vaccination programme immunises \(80\%\) of the population with a vaccine that is \(90\%\) effective. After vaccination the disease is still observed to have an effective reproduction number \(R_e = 0.9\). Assuming the relationship \(R_e = R_0\,(1 - p\,e)\), where \(p\) is the proportion vaccinated and \(e\) the vaccine efficacy, calculate the basic reproduction number \(R_0\) of the disease before vaccination.
Answer Options
About This Question
This is Igcse Model Questions Vol1 2020 Biology Question 40. It is one of the objective questions from the 2020 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Hard .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.