Public Health Multiple Choice Exam
1. What is the definition of epidemiology?
A) Study of pharmaceutical drugs
B) Study of the distribution and determinants of health-related states in populations
C) Study of individual patient care
D) Study of hospital administration
2. Which of the following is the best measure of disease frequency in a population?
A) Prevalence
B) Incidence
C) Mortality rate
D) Case fatality rate
3. The incubation period refers to:
A) Time from exposure to onset of symptoms
B) Time from onset of symptoms to recovery
C) Duration of infectivity
D) Time between diagnosis and treatment
4. Herd immunity is achieved when:
A) All individuals are vaccinated
B) A sufficient proportion of the population is immune to interrupt transmission
C) Only high-risk groups are protected
D) Natural infection occurs in 50% of the population
5. Which study design is considered the gold standard for establishing causality?
A) Cross-sectional study
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B) Case-control study
C) Randomized Controlled Trial (RCT)
D) Cohort study
6. The basic reproductive number (R0) represents:
A) Total number of cases in an epidemic
B) Average number of secondary cases generated by one infected person in a susceptible
population
C) Recovery rate from infection
D) Mortality rate per 1000 population
7. What does DALYs stand for?
A) Daily Active Life Years
B) Disability-Adjusted Life Years
C) Disease Assessment Life Years
D) Death and Life Years
8. Primary prevention aims to:
A) Reduce complications of disease
B) Prevent disease occurrence
C) Treat early symptoms
D) Rehabilitate patients
9. The leading cause of death globally according to WHO is:
A) Communicable diseases
B) Ischemic heart disease
C) Malaria
D) Road traffic accidents