Neco 2022 Biology Question 37

Practice objective / multiple choice question 37 from the 2022 Neco Biology examination.

Neco 2022 Biology Objective / Multiple Choice Hard Difficulty
Question 37 NECO • 2022 • BIOLOGY • objective

In a closed community of 10,000 people a new infectious disease spreads. The transmission rate \(\beta\) is 0.3 per day and the recovery rate \(\gamma\) is 0.1 per day. Before the outbreak a vaccination programme immunises 40% of the population. After 5 days a public‑health campaign reduces the transmission rate by 20%. Using the SIR model, calculate the effective reproduction number after vaccination and after the campaign, and state whether the outbreak will eventually die out.

Answer Options

Correct Answer A. Re after vaccination = 1.8; Re after campaign = 1.44; outbreak will continue
B. Re after vaccination = 2.1; Re after campaign = 1.68; outbreak will continue
C. Re after vaccination = 1.8; Re after campaign = 1.2; outbreak will die out
D. Re after vaccination = 1.5; Re after campaign = 1.2; outbreak will continue
Correct Answer
A
Correct Option:
Re after vaccination = 1.8; Re after campaign = 1.44; outbreak will continue

About This Question

This is Neco 2022 Biology Question 37. It is one of the objective questions from the 2022 Neco Biology examination.

Difficulty level: Hard .

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