Neco 2024 Biology Question 10

Practice objective / multiple choice question 10 from the 2024 Neco Biology examination.

Neco 2024 Biology Objective / Multiple Choice Hard Difficulty
Question 10 NECO • 2024 • BIOLOGY • objective

In a community, 2,000 individuals are exposed to a contaminated water source, of whom 150 develop cholera. In a comparable unexposed group of 3,000 individuals, 90 develop cholera. (i) Calculate the relative risk (RR) of cholera associated with exposure. (ii) Determine the attributable risk percent (AR%) among the exposed. (iii) Based on these findings, which single public‑health intervention would most effectively reduce the incidence of cholera in this community?

Answer Options

A. RR = 2.0; AR% = 50 %; intervention: health education on handwashing
Correct Answer B. RR = 2.5; AR% = 60 %; intervention: provision of safe drinking water (e.g., chlorination)
C. RR = 1.7; AR% = 40 %; intervention: distribution of oral rehydration salts (ORS)
D. RR = 3.0; AR% = 70 %; intervention: vaccination against cholera
Correct Answer
B
Correct Option:
RR = 2.5; AR% = 60 %; intervention: provision of safe drinking water (e.g., chlorination)

About This Question

This is Neco 2024 Biology Question 10. It is one of the objective questions from the 2024 Neco Biology examination.

Difficulty level: Hard .

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