NURS 340 Public Health Quizzes 1-3 Comprehensive
Exam (2026/2027)
Year: 2026-2027 | Verified Question Count: 75 Questions | 100% VERIFIED
Introduction
This comprehensive exam assessment provides a rigorous, 75-question evaluation designed for
nursing candidates preparing for comprehensive evaluation in NURS 340 Public Health. Mapped
directly to official academic public health nursing domain blueprints, this assessment evaluates
epidemiological reasoning and population-level decision-making across six core domains:
Epidemiology, Community Health Assessment, Health Promotion and Disease Prevention, Social
Determinants of Health, Public Health Policy, and Environmental Health. Mastery of these
integrated population health concepts ensures that nursing candidates demonstrate the clinical
judgment, environmental awareness, and health promotion execution required for professional
nursing licensure and community health execution.
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Question 1. A public health nurse is investigating an outbreak of West Nile Virus in a rural county.
Using the Epidemiological Triad model, how should the nurse classify the Culex mosquito?
A. The Vector transporting the infectious Agent between reservoir and Host.
B. The primary human Host.
C. The environmental climate condition.
D. The chemical synthetic pesticide.
Correct Answer: A. The Vector transporting the infectious Agent between reservoir and Host.
Rationale: In the Epidemiological Triad model (Host, Agent, Environment), an insect like the Culex
mosquito that transmits an infectious pathogen (West Nile Virus) from an animal reservoir to a
susceptible human host is classified as a biological Vector.
Question 2. When analyzing complex chronic diseases like Type 2 Diabetes Mellitus, why do
epidemiologists utilize the Web of Causation model rather than the traditional Epidemiological
Triad?
A. The Web of Causation is used exclusively for acute bacterial foodborne outbreaks.
B. The Web of Causation illustrates multiple interacting genetic, behavioral, environmental, and
social risk factors that combinedly drive chronic disease onset.
C. The Epidemiological Triad cannot be drawn on paper.
D. The Web of Causation eliminates the need for statistical data collection.
Correct Answer: B. The Web of Causation illustrates multiple interacting genetic, behavioral,
environmental, and social risk factors that combinedly drive chronic disease onset.
, Rationale: Chronic non-communicable diseases (like diabetes or cardiovascular disease) rarely result
from a single infectious agent. The Web of Causation maps complex, interconnected webs of indirect and
direct risk factors across genetic, social, environmental, and lifestyle domains.
Question 3. Which public health intervention represents Primary Prevention?
A. Providing stroke rehabilitation therapy to restore motor function.
B. Performing mammography screening for early breast cancer detection.
C. Administering the Measles, Mumps, and Rubella (MMR) vaccine at a community clinic.
D. Testing blood glucose levels in patients diagnosed with diabetes.
Correct Answer: C. Administering the Measles, Mumps, and Rubella (MMR) vaccine at a
community clinic.
Rationale: Primary Prevention aims to prevent disease onset before it occurs by reducing susceptibility
or exposure (e.g., immunizations, health education). Secondary Prevention focuses on early
detection/screening. Tertiary Prevention focuses on rehabilitation and managing established disease.
Question 4. A occupational health nurse organizes a mobile screening clinic to perform PPD skin
tests and digital chest X-rays for factory workers. What level of disease prevention is executed?
A. Quaternary Prevention.
B. Primary Prevention.
C. Tertiary Prevention.
D. Secondary Prevention.
Correct Answer: D. Secondary Prevention.
Rationale: Secondary Prevention emphasizes early disease detection, screening, and rapid intervention
during asymptomatic stages to halt disease progression and prevent transmission (e.g., PPD skin testing
for tuberculosis).
Question 5. A public health nurse leads a weekly diabetic foot care and glucose management
support group at a senior center to prevent lower extremity amputations. What level of prevention
is demonstrated?
A. Tertiary Prevention.
B. Primary Prevention.
C. Secondary Prevention.
D. Primordial Prevention.
Correct Answer: A. Tertiary Prevention.
Rationale: Tertiary Prevention focuses on managing established chronic clinical disease, preventing
long-term disability, minimizing complications, and optimizing functional quality of life (e.g., diabetic foot
care education to prevent amputations).
Question 6. In a city of 100,000 residents, 50 new cases of active pulmonary tuberculosis are
diagnosed during the year 2026. What is the Incidence Rate of tuberculosis per 100,000 population
for 2026?
, A. 500 per 100,000.
B. 50 per 100,000.
C. 5 per 100,000.
D. 0.5 per 100,000.
Correct Answer: B. 50 per 100,000.
Rationale: Incidence Rate measures NEW cases arising in a population at risk over a specified time
period: $\text{Incidence} = (\text{New Cases} / \text{Population at Risk}) \times 100,000 = (50 /
100,000) \times 100,000 = 50\text{ per }100,000$.
Question 7. A county health department records a total of 1,200 residents currently living with
HIV in a total county population of 300,000. What is the Prevalence Rate of HIV in this county?
A. 300 per 100,000.
B. 120 per 100,000.
C. 400 per 100,000 (0.4%).
D. 12 per 100,000.
Correct Answer: C. 400 per 100,000 (0.4%).
Rationale: Prevalence Rate measures ALL existing cases (new plus old) in a population at a given point
in time: $\text{Prevalence} = (\text{Total Existing Cases} / \text{Total Population}) \times 100,000 =
(1,,000) \times 100,000 = 400\text{ per }100,000$ ($0.4\%$).
Question 8. During a community picnic attended by 200 people, 50 individuals who ate potato
salad developed acute Salmonella food poisoning. What is the calculated Attack Rate for potato
salad consumers?
A. 75%.
B. 50%.
C. 10%.
D. 25%.
Correct Answer: D. 25%.
Rationale: Attack Rate is a cumulative incidence rate used in acute foodborne outbreak investigations:
$\text{Attack Rate} = (\text{Number of Ill Exposed Persons} / \text{Total Exposed Persons}) \times 100
= () \times 100 = 25\%$.
Question 9. A novel rapid screening test for Hepatitis C identifies 90 out of 100 truly infected
individuals. What performance metric is $90\%$?
A. Sensitivity (True Positive Rate).
B. Specificity (True Negative Rate).
C. Positive Predictive Value.
D. Negative Predictive Value.
Correct Answer: A. Sensitivity (True Positive Rate).
Exam (2026/2027)
Year: 2026-2027 | Verified Question Count: 75 Questions | 100% VERIFIED
Introduction
This comprehensive exam assessment provides a rigorous, 75-question evaluation designed for
nursing candidates preparing for comprehensive evaluation in NURS 340 Public Health. Mapped
directly to official academic public health nursing domain blueprints, this assessment evaluates
epidemiological reasoning and population-level decision-making across six core domains:
Epidemiology, Community Health Assessment, Health Promotion and Disease Prevention, Social
Determinants of Health, Public Health Policy, and Environmental Health. Mastery of these
integrated population health concepts ensures that nursing candidates demonstrate the clinical
judgment, environmental awareness, and health promotion execution required for professional
nursing licensure and community health execution.
―――――――――――――――――――――――――――――――――――――――――――――――――――――――
Question 1. A public health nurse is investigating an outbreak of West Nile Virus in a rural county.
Using the Epidemiological Triad model, how should the nurse classify the Culex mosquito?
A. The Vector transporting the infectious Agent between reservoir and Host.
B. The primary human Host.
C. The environmental climate condition.
D. The chemical synthetic pesticide.
Correct Answer: A. The Vector transporting the infectious Agent between reservoir and Host.
Rationale: In the Epidemiological Triad model (Host, Agent, Environment), an insect like the Culex
mosquito that transmits an infectious pathogen (West Nile Virus) from an animal reservoir to a
susceptible human host is classified as a biological Vector.
Question 2. When analyzing complex chronic diseases like Type 2 Diabetes Mellitus, why do
epidemiologists utilize the Web of Causation model rather than the traditional Epidemiological
Triad?
A. The Web of Causation is used exclusively for acute bacterial foodborne outbreaks.
B. The Web of Causation illustrates multiple interacting genetic, behavioral, environmental, and
social risk factors that combinedly drive chronic disease onset.
C. The Epidemiological Triad cannot be drawn on paper.
D. The Web of Causation eliminates the need for statistical data collection.
Correct Answer: B. The Web of Causation illustrates multiple interacting genetic, behavioral,
environmental, and social risk factors that combinedly drive chronic disease onset.
, Rationale: Chronic non-communicable diseases (like diabetes or cardiovascular disease) rarely result
from a single infectious agent. The Web of Causation maps complex, interconnected webs of indirect and
direct risk factors across genetic, social, environmental, and lifestyle domains.
Question 3. Which public health intervention represents Primary Prevention?
A. Providing stroke rehabilitation therapy to restore motor function.
B. Performing mammography screening for early breast cancer detection.
C. Administering the Measles, Mumps, and Rubella (MMR) vaccine at a community clinic.
D. Testing blood glucose levels in patients diagnosed with diabetes.
Correct Answer: C. Administering the Measles, Mumps, and Rubella (MMR) vaccine at a
community clinic.
Rationale: Primary Prevention aims to prevent disease onset before it occurs by reducing susceptibility
or exposure (e.g., immunizations, health education). Secondary Prevention focuses on early
detection/screening. Tertiary Prevention focuses on rehabilitation and managing established disease.
Question 4. A occupational health nurse organizes a mobile screening clinic to perform PPD skin
tests and digital chest X-rays for factory workers. What level of disease prevention is executed?
A. Quaternary Prevention.
B. Primary Prevention.
C. Tertiary Prevention.
D. Secondary Prevention.
Correct Answer: D. Secondary Prevention.
Rationale: Secondary Prevention emphasizes early disease detection, screening, and rapid intervention
during asymptomatic stages to halt disease progression and prevent transmission (e.g., PPD skin testing
for tuberculosis).
Question 5. A public health nurse leads a weekly diabetic foot care and glucose management
support group at a senior center to prevent lower extremity amputations. What level of prevention
is demonstrated?
A. Tertiary Prevention.
B. Primary Prevention.
C. Secondary Prevention.
D. Primordial Prevention.
Correct Answer: A. Tertiary Prevention.
Rationale: Tertiary Prevention focuses on managing established chronic clinical disease, preventing
long-term disability, minimizing complications, and optimizing functional quality of life (e.g., diabetic foot
care education to prevent amputations).
Question 6. In a city of 100,000 residents, 50 new cases of active pulmonary tuberculosis are
diagnosed during the year 2026. What is the Incidence Rate of tuberculosis per 100,000 population
for 2026?
, A. 500 per 100,000.
B. 50 per 100,000.
C. 5 per 100,000.
D. 0.5 per 100,000.
Correct Answer: B. 50 per 100,000.
Rationale: Incidence Rate measures NEW cases arising in a population at risk over a specified time
period: $\text{Incidence} = (\text{New Cases} / \text{Population at Risk}) \times 100,000 = (50 /
100,000) \times 100,000 = 50\text{ per }100,000$.
Question 7. A county health department records a total of 1,200 residents currently living with
HIV in a total county population of 300,000. What is the Prevalence Rate of HIV in this county?
A. 300 per 100,000.
B. 120 per 100,000.
C. 400 per 100,000 (0.4%).
D. 12 per 100,000.
Correct Answer: C. 400 per 100,000 (0.4%).
Rationale: Prevalence Rate measures ALL existing cases (new plus old) in a population at a given point
in time: $\text{Prevalence} = (\text{Total Existing Cases} / \text{Total Population}) \times 100,000 =
(1,,000) \times 100,000 = 400\text{ per }100,000$ ($0.4\%$).
Question 8. During a community picnic attended by 200 people, 50 individuals who ate potato
salad developed acute Salmonella food poisoning. What is the calculated Attack Rate for potato
salad consumers?
A. 75%.
B. 50%.
C. 10%.
D. 25%.
Correct Answer: D. 25%.
Rationale: Attack Rate is a cumulative incidence rate used in acute foodborne outbreak investigations:
$\text{Attack Rate} = (\text{Number of Ill Exposed Persons} / \text{Total Exposed Persons}) \times 100
= () \times 100 = 25\%$.
Question 9. A novel rapid screening test for Hepatitis C identifies 90 out of 100 truly infected
individuals. What performance metric is $90\%$?
A. Sensitivity (True Positive Rate).
B. Specificity (True Negative Rate).
C. Positive Predictive Value.
D. Negative Predictive Value.
Correct Answer: A. Sensitivity (True Positive Rate).
