Waec Model Questions Vol1 2021 Biology Question 11

Practice objective / multiple choice question 11 from the 2021 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2021 Biology Objective / Multiple Choice Hard Difficulty
Question 11 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective

In a closed community a contagious disease has a basic reproduction number (R₀) of 3.5. A vaccine available for this disease is 80 % effective. What minimum proportion of the total population must be vaccinated to achieve herd immunity?

Answer Options

Correct Answer A. 89%
B. 71%
C. 80%
D. 95%
Correct Answer
A
Correct Option:
89%

About This Question

This is Waec Model Questions Vol1 2021 Biology Question 11. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Biology examination.

Difficulty level: Hard .

View More Waec Model Questions Vol1 2021 Biology Questions More Waec Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support