Public Health and Epidemiology Complete
Exam Bank With 2026 High Yield
Questions and Detailed Rationales for
Medical and Nursing Students
Exam Overview
This comprehensive practice examination contains 300 questions
covering public health and epidemiology. The content is divided into
five major sections: Principles of Epidemiology, Disease Surveillance
and Outbreak Investigation, Public Health Prevention and Control,
Social and Behavioral Determinants of Health, and Global Health and
Health Policy. Each question is followed by a detailed rationale
explaining the correct answer and why the distractors are incorrect.
This exam is designed to prepare students for public health and
epidemiology coursework and clinical application.
Section One: Principles of Epidemiology Questions 1 through 60
Question 1
Epidemiology is the study of:
A) The distribution and determinants of health-related states in populations
B) The treatment of individual patients
C) The molecular basis of disease
D) The clinical manifestations of disease
Answer: A
Explanation: Epidemiology is the study of the distribution and determinants
of health-related states in populations. It is the basic science of public
health. It aims to control health problems in populations.
,
Question 2
The epidemiologic triad consists of:
A) Host, agent, and environment
B) Host, agent, and vector
C) Agent, environment, and vector
D) Host, environment, and vector
Answer: A
Explanation: The epidemiologic triad consists of host, agent, and
environment. The host is the susceptible individual. The agent is the cause
of disease. The environment is the external factors that influence
transmission.
Question 3
Incidence is defined as:
A) The number of new cases of a disease in a population over a period of
time
B) The total number of cases of a disease in a population at a point in time
C) The number of deaths from a disease in a population over a period of
time
D) The number of recovered cases in a population over a period of time
Answer: A
Explanation: Incidence is the number of new cases of a disease in a
population over a period of time. It measures the risk of developing a
disease. It is important for understanding disease transmission.
Question 4
Prevalence is defined as:
A) The total number of cases of a disease in a population at a point in time
B) The number of new cases of a disease in a population over a period of
time
C) The number of deaths from a disease in a population over a period of
time
D) The number of recovered cases in a population over a period of time
,
Answer: A
Explanation: Prevalence is the total number of cases of a disease in a
population at a point in time. It measures the burden of disease. It is
influenced by incidence and duration of disease.
Question 5
Morbidity is defined as:
A) The state of being diseased or the incidence of disease
B) The state of being dead or the incidence of death
C) The state of being healthy or the incidence of health
D) The state of being disabled or the incidence of disability
Answer: A
Explanation: Morbidity is the state of being diseased or the incidence of
disease. It includes illness and disability. It is a measure of the burden of
disease.
Question 6
Mortality is defined as:
A) The state of being dead or the incidence of death
B) The state of being diseased or the incidence of disease
C) The state of being healthy or the incidence of health
D) The state of being disabled or the incidence of disability
Answer: A
Explanation: Mortality is the state of being dead or the incidence of death. It
is a measure of the severity of disease. It is used to compare health
outcomes.
Question 7
Case fatality rate is defined as:
A) The proportion of cases that die from a disease
B) The proportion of the population that dies from a disease
C) The proportion of cases that recover from a disease
D) The proportion of the population that develops a disease
,
Answer: A
Explanation: Case fatality rate is the proportion of cases that die from a
disease. It measures the severity of the disease. It is calculated as deaths
divided by cases.
Question 8
Crude mortality rate is defined as:
A) The total number of deaths in a population over a period of time
B) The number of deaths from a specific cause in a population over a period
of time
C) The number of deaths in a specific age group in a population over a
period of time
D) The number of deaths in a specific gender in a population over a period
of time
Answer: A
Explanation: Crude mortality rate is the total number of deaths in a
population over a period of time. It is the overall death rate. It is not
adjusted for age or other factors.
Question 9
Age-adjusted mortality rate is used to:
A) Compare mortality rates between populations with different age
structures
B) Compare mortality rates between populations with different genders
C) Compare mortality rates between populations with different races
D) Compare mortality rates between populations with different
socioeconomic statuses
Answer: A
Explanation: Age-adjusted mortality rate is used to compare mortality rates
between populations with different age structures. It removes the effect of
age. It allows for fair comparison.
Question 10
Exam Bank With 2026 High Yield
Questions and Detailed Rationales for
Medical and Nursing Students
Exam Overview
This comprehensive practice examination contains 300 questions
covering public health and epidemiology. The content is divided into
five major sections: Principles of Epidemiology, Disease Surveillance
and Outbreak Investigation, Public Health Prevention and Control,
Social and Behavioral Determinants of Health, and Global Health and
Health Policy. Each question is followed by a detailed rationale
explaining the correct answer and why the distractors are incorrect.
This exam is designed to prepare students for public health and
epidemiology coursework and clinical application.
Section One: Principles of Epidemiology Questions 1 through 60
Question 1
Epidemiology is the study of:
A) The distribution and determinants of health-related states in populations
B) The treatment of individual patients
C) The molecular basis of disease
D) The clinical manifestations of disease
Answer: A
Explanation: Epidemiology is the study of the distribution and determinants
of health-related states in populations. It is the basic science of public
health. It aims to control health problems in populations.
,
Question 2
The epidemiologic triad consists of:
A) Host, agent, and environment
B) Host, agent, and vector
C) Agent, environment, and vector
D) Host, environment, and vector
Answer: A
Explanation: The epidemiologic triad consists of host, agent, and
environment. The host is the susceptible individual. The agent is the cause
of disease. The environment is the external factors that influence
transmission.
Question 3
Incidence is defined as:
A) The number of new cases of a disease in a population over a period of
time
B) The total number of cases of a disease in a population at a point in time
C) The number of deaths from a disease in a population over a period of
time
D) The number of recovered cases in a population over a period of time
Answer: A
Explanation: Incidence is the number of new cases of a disease in a
population over a period of time. It measures the risk of developing a
disease. It is important for understanding disease transmission.
Question 4
Prevalence is defined as:
A) The total number of cases of a disease in a population at a point in time
B) The number of new cases of a disease in a population over a period of
time
C) The number of deaths from a disease in a population over a period of
time
D) The number of recovered cases in a population over a period of time
,
Answer: A
Explanation: Prevalence is the total number of cases of a disease in a
population at a point in time. It measures the burden of disease. It is
influenced by incidence and duration of disease.
Question 5
Morbidity is defined as:
A) The state of being diseased or the incidence of disease
B) The state of being dead or the incidence of death
C) The state of being healthy or the incidence of health
D) The state of being disabled or the incidence of disability
Answer: A
Explanation: Morbidity is the state of being diseased or the incidence of
disease. It includes illness and disability. It is a measure of the burden of
disease.
Question 6
Mortality is defined as:
A) The state of being dead or the incidence of death
B) The state of being diseased or the incidence of disease
C) The state of being healthy or the incidence of health
D) The state of being disabled or the incidence of disability
Answer: A
Explanation: Mortality is the state of being dead or the incidence of death. It
is a measure of the severity of disease. It is used to compare health
outcomes.
Question 7
Case fatality rate is defined as:
A) The proportion of cases that die from a disease
B) The proportion of the population that dies from a disease
C) The proportion of cases that recover from a disease
D) The proportion of the population that develops a disease
,
Answer: A
Explanation: Case fatality rate is the proportion of cases that die from a
disease. It measures the severity of the disease. It is calculated as deaths
divided by cases.
Question 8
Crude mortality rate is defined as:
A) The total number of deaths in a population over a period of time
B) The number of deaths from a specific cause in a population over a period
of time
C) The number of deaths in a specific age group in a population over a
period of time
D) The number of deaths in a specific gender in a population over a period
of time
Answer: A
Explanation: Crude mortality rate is the total number of deaths in a
population over a period of time. It is the overall death rate. It is not
adjusted for age or other factors.
Question 9
Age-adjusted mortality rate is used to:
A) Compare mortality rates between populations with different age
structures
B) Compare mortality rates between populations with different genders
C) Compare mortality rates between populations with different races
D) Compare mortality rates between populations with different
socioeconomic statuses
Answer: A
Explanation: Age-adjusted mortality rate is used to compare mortality rates
between populations with different age structures. It removes the effect of
age. It allows for fair comparison.
Question 10
