NSG 430 Community Health Nursing Final Exam |
Complete Practice Questions, Verified Answers & Detailed
Rationales (2026/2027)
QUESTION 1
A public health nurse is conducting an immunization clinic at a local
community center. Which level of prevention is the nurse
implementing?
• A. Primary prevention
• B. Secondary prevention
• C. Tertiary prevention
• D. Quaternary prevention
Correct Answer: A. Primary prevention
Detailed Rationale: Primary prevention measures, such as vaccinations
and health education, focus on preventing disease or injury before it
ever occurs by protecting healthy individuals from exposure.
QUESTION 2
A community health nurse organizes a mobile mammography van for
women over 40 living in a rural, underserved area. What type of
prevention does this intervention represent?
• A. Primary prevention
• B. Secondary prevention
• C. Tertiary prevention
, • D. Primordial prevention
Correct Answer: B. Secondary prevention
Detailed Rationale: Secondary prevention focuses on early diagnosis
and prompt treatment of a disease or condition through screening
programs (such as mammograms, pap smears, and blood pressure
checks) to halt pathological progression.
QUESTION 3
Which nursing intervention is an example of tertiary prevention for
clients diagnosed with type 2 diabetes mellitus?
• A. Teaching community members about a low-sugar, high-fiber
diet
• B. Screening high-risk adults for elevated fasting blood glucose
levels
• C. Conducting support groups and foot-care education for clients
with established diabetic neuropathy
• D. Administering routine influenza vaccinations
Correct Answer: C. Conducting support groups and foot-care education
for clients with established diabetic neuropathy
Detailed Rationale: Tertiary prevention targets individuals who already
have a disease or disability, aiming to manage complications, restore
function, and improve quality of life.
QUESTION 4
,In the epidemiological triangle, which component refers to the extrinsic
factor that sets disease in motion, such as a bacterium, virus, chemical
agent, or physical stressor?
• A. Host
• B. Agent
• C. Environment
• D. Vector
Correct Answer: B. Agent
Detailed Rationale: The epidemiological triangle consists of the agent
(the infectious or physical cause), the host (the susceptible human or
animal), and the environment (external conditions that influence the
interaction).
QUESTION 5
How does incidence differ from prevalence in community health
epidemiology?
• A. Incidence measures the total number of existing cases (both old
and new) in a population at a given time, whereas prevalence
measures only new cases.
• B. Incidence measures the number of new cases of a disease in a
population over a specific time period, whereas prevalence
measures the total number of existing cases (old and new) at a
given time.
• C. Incidence and prevalence are interchangeable terms for disease
frequency.
, • D. Prevalence measures mortality rates exclusively.
Correct Answer: B. Incidence measures the number of new cases of a
disease in a population over a specific time period, whereas prevalence
measures the total number of existing cases (old and new) at a given
time.
Detailed Rationale: Incidence tracks the speed and risk of acquiring a
new condition (new cases / population at risk), while prevalence
reflects the overall burden or widespread nature of a condition in a
population (total existing cases / total population).
QUESTION 6
What is the primary public health objective of achieving herd immunity
within a community?
• A. To completely eradicate vector-borne pathogens from the soil
• B. To protect susceptible individuals in a population from infection
by ensuring a high percentage of immune individuals, thereby
halting community transmission
• C. To guarantee that every individual develops permanent lifelong
clinical symptoms
• D. To eliminate the need for any environmental sanitation
measures
Correct Answer: B. To protect susceptible individuals in a population
from infection by ensuring a high percentage of immune individuals,
thereby halting community transmission
Detailed Rationale: Herd immunity occurs when a large proportion of a
community becomes immune to an infectious disease (either through
Complete Practice Questions, Verified Answers & Detailed
Rationales (2026/2027)
QUESTION 1
A public health nurse is conducting an immunization clinic at a local
community center. Which level of prevention is the nurse
implementing?
• A. Primary prevention
• B. Secondary prevention
• C. Tertiary prevention
• D. Quaternary prevention
Correct Answer: A. Primary prevention
Detailed Rationale: Primary prevention measures, such as vaccinations
and health education, focus on preventing disease or injury before it
ever occurs by protecting healthy individuals from exposure.
QUESTION 2
A community health nurse organizes a mobile mammography van for
women over 40 living in a rural, underserved area. What type of
prevention does this intervention represent?
• A. Primary prevention
• B. Secondary prevention
• C. Tertiary prevention
, • D. Primordial prevention
Correct Answer: B. Secondary prevention
Detailed Rationale: Secondary prevention focuses on early diagnosis
and prompt treatment of a disease or condition through screening
programs (such as mammograms, pap smears, and blood pressure
checks) to halt pathological progression.
QUESTION 3
Which nursing intervention is an example of tertiary prevention for
clients diagnosed with type 2 diabetes mellitus?
• A. Teaching community members about a low-sugar, high-fiber
diet
• B. Screening high-risk adults for elevated fasting blood glucose
levels
• C. Conducting support groups and foot-care education for clients
with established diabetic neuropathy
• D. Administering routine influenza vaccinations
Correct Answer: C. Conducting support groups and foot-care education
for clients with established diabetic neuropathy
Detailed Rationale: Tertiary prevention targets individuals who already
have a disease or disability, aiming to manage complications, restore
function, and improve quality of life.
QUESTION 4
,In the epidemiological triangle, which component refers to the extrinsic
factor that sets disease in motion, such as a bacterium, virus, chemical
agent, or physical stressor?
• A. Host
• B. Agent
• C. Environment
• D. Vector
Correct Answer: B. Agent
Detailed Rationale: The epidemiological triangle consists of the agent
(the infectious or physical cause), the host (the susceptible human or
animal), and the environment (external conditions that influence the
interaction).
QUESTION 5
How does incidence differ from prevalence in community health
epidemiology?
• A. Incidence measures the total number of existing cases (both old
and new) in a population at a given time, whereas prevalence
measures only new cases.
• B. Incidence measures the number of new cases of a disease in a
population over a specific time period, whereas prevalence
measures the total number of existing cases (old and new) at a
given time.
• C. Incidence and prevalence are interchangeable terms for disease
frequency.
, • D. Prevalence measures mortality rates exclusively.
Correct Answer: B. Incidence measures the number of new cases of a
disease in a population over a specific time period, whereas prevalence
measures the total number of existing cases (old and new) at a given
time.
Detailed Rationale: Incidence tracks the speed and risk of acquiring a
new condition (new cases / population at risk), while prevalence
reflects the overall burden or widespread nature of a condition in a
population (total existing cases / total population).
QUESTION 6
What is the primary public health objective of achieving herd immunity
within a community?
• A. To completely eradicate vector-borne pathogens from the soil
• B. To protect susceptible individuals in a population from infection
by ensuring a high percentage of immune individuals, thereby
halting community transmission
• C. To guarantee that every individual develops permanent lifelong
clinical symptoms
• D. To eliminate the need for any environmental sanitation
measures
Correct Answer: B. To protect susceptible individuals in a population
from infection by ensuring a high percentage of immune individuals,
thereby halting community transmission
Detailed Rationale: Herd immunity occurs when a large proportion of a
community becomes immune to an infectious disease (either through
