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Fundamentals of Epidemiology

Epidemiology

A collection of factual questions covering the principles, history, and metrics of epidemiology.

public health science statistics

12 Questions Medium Ages 15+ Jul 15, 2026

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About this Study Set

This study set covers Epidemiology through 12 practice questions. A collection of factual questions covering the principles, history, and metrics of epidemiology. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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1 Who is historically recognized as the 'father of modern epidemiology' for his investigation of the 1854 Broad Street cholera outbreak?

A John Snow
B Louis Pasteur
C Robert Koch
D Ignaz Semmelweis

2 What term describes the constant presence or usual prevalence of a disease or infectious agent within a given geographic area?

A Pandemic
B Endemic
C Epidemic
D Sporadic

3 In epidemiological studies, what does a 'relative risk' of 1.0 indicate?

A The risk is significantly higher in the exposed group
B The risk is lower in the exposed group
C There is no difference in risk between the exposed and unexposed groups
D The study is statistically invalid

4 Which study design is considered the most appropriate for investigating rare diseases or diseases with long latency periods?

A Cross-sectional study
B Case-control study
C Cohort study
D Ecological study

5 What is the 'incubation period' of an infectious disease defined as?

A The time between the onset of symptoms and full recovery
B The time between exposure to an infectious agent and the appearance of the first symptoms
C The time a pathogen remains viable on a surface
D The duration a patient is infectious to others

6 Which measure of morbidity refers to the total number of existing cases of a disease in a population at a specific point in time?

A Incidence rate
B Attack rate
C Prevalence
D Case fatality rate

7 In the context of disease transmission, what is a 'fomite'?

A An insect vector that transmits pathogens
B An inanimate object that can carry and spread disease
C A reservoir host such as a bat or rodent
D A person who shows no symptoms but carries a pathogen

8 What is the primary purpose of a 'double-blind' study design in epidemiology?

A To ensure only the researchers know the group assignments
B To increase the sample size of the study
C To eliminate bias from both the participants and the researchers
D To allow for participants to switch groups during the study

9 Which metric represents the number of new cases of a disease that occur during a specified period of time in a population at risk?

A Incidence
B Point prevalence
C Period prevalence
D Mortality rate

10 What is the definition of a 'zoonotic' disease?

A A disease that is transmitted primarily through contaminated water
B A disease that is transmissible from vertebrate animals to humans
C A disease that has been eradicated worldwide
D A disease caused solely by genetic mutations

11 What does the 'basic reproduction number' (R0) represent in infectious disease modeling?

A The mortality rate of an infection
B The average number of secondary cases produced by one primary case in a completely susceptible population
C The percentage of the population that is immune
D The time it takes for a disease to become endemic

12 Which type of bias occurs when participants in a study alter their behavior because they know they are being observed?

A Recall bias
B Selection bias
C Hawthorne effect
D Publication bias

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