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

Difficulty level: Hard .

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