D450 Objective Assessment – WGU Community
Health OA – (2026/2027) Actual Questions & Study
Guide | Guarantee Pass
250 QUESTIONS
TABLE OF CONTENTS
# TOPIC
1 Community Health Nursing Roles
2 Epidemiology & Surveillance
3 Levels of Prevention
4 Community Assessment
5 Health Promotion & Education
6 Communicable Disease & Immunization
7 Environmental Health
8 Disaster Management
9 Vulnerable Populations
10 Cultural Competence
11 Health Policy & Advocacy
12 Case Management & Coordination
13 Social Determinants of Health
,Q1
A community health nurse is conducting a windshield survey. Which of the following is the
primary purpose of this assessment?
A) To collect statistical data on disease rates
B) To observe the physical environment and community characteristics CORRECT
C) To interview key informants
D) To review hospital records
Rationale
A windshield survey is a visual overview of a community to assess housing, roads, businesses, and
environmental conditions.
Q2
Which level of prevention is a community-wide influenza vaccination campaign?
A) Primary prevention CORRECT
B) Primary prevention
C) Secondary prevention
D) Tertiary prevention
Rationale
Vaccination prevents disease before it occurs, which is primary prevention.
Q3
A nurse is investigating an outbreak of foodborne illness. Which measure describes the proportion
of people who ate a specific food and became ill?
A) Incidence rate
B) Attack rate CORRECT
C) Prevalence rate
2
,D) Mortality rate
Rationale
Attack rate is the proportion of exposed persons who become ill, commonly used in outbreak
investigations.
Q4
Which of the following is a reportable communicable disease in most U.S. states?
A) Common cold
B) Tuberculosis CORRECT
C) Seasonal allergies
D) Hypertension
Rationale
Tuberculosis is a reportable disease requiring notification to public health authorities.
Q5
A community health nurse is teaching a group about reducing the risk of lead poisoning. Which
action is most important?
A) Encouraging children to play outside
B) Testing children for blood lead levels at recommended ages CORRECT
C) Using lead-based paint in older homes
D) Drinking bottled water only
Rationale
Blood lead screening identifies exposure early, especially in children living in older housing.
3
, Q6
Which organization publishes the Immunization Schedules for the United States?
A) WHO
B) CDC CORRECT
C) FDA
D) NIH
Rationale
The CDC’s Advisory Committee on Immunization Practices (ACIP) publishes the U.S. immunization
schedules.
Q7
A nurse is caring for a client who is homeless. Which factor is most likely to affect the client’s
health?
A) Lack of transportation
B) Lack of stable housing and access to care CORRECT
C) Excessive exercise
D) Overuse of preventive services
Rationale
Homelessness is a major social determinant of health, limiting access to care, nutrition, and safety.
Q8
Which of the following is an example of tertiary prevention?
A) Immunization
B) Screening for hypertension
C) Cardiac rehabilitation after a myocardial infarction CORRECT
D) Smoking prevention education
4
Health OA – (2026/2027) Actual Questions & Study
Guide | Guarantee Pass
250 QUESTIONS
TABLE OF CONTENTS
# TOPIC
1 Community Health Nursing Roles
2 Epidemiology & Surveillance
3 Levels of Prevention
4 Community Assessment
5 Health Promotion & Education
6 Communicable Disease & Immunization
7 Environmental Health
8 Disaster Management
9 Vulnerable Populations
10 Cultural Competence
11 Health Policy & Advocacy
12 Case Management & Coordination
13 Social Determinants of Health
,Q1
A community health nurse is conducting a windshield survey. Which of the following is the
primary purpose of this assessment?
A) To collect statistical data on disease rates
B) To observe the physical environment and community characteristics CORRECT
C) To interview key informants
D) To review hospital records
Rationale
A windshield survey is a visual overview of a community to assess housing, roads, businesses, and
environmental conditions.
Q2
Which level of prevention is a community-wide influenza vaccination campaign?
A) Primary prevention CORRECT
B) Primary prevention
C) Secondary prevention
D) Tertiary prevention
Rationale
Vaccination prevents disease before it occurs, which is primary prevention.
Q3
A nurse is investigating an outbreak of foodborne illness. Which measure describes the proportion
of people who ate a specific food and became ill?
A) Incidence rate
B) Attack rate CORRECT
C) Prevalence rate
2
,D) Mortality rate
Rationale
Attack rate is the proportion of exposed persons who become ill, commonly used in outbreak
investigations.
Q4
Which of the following is a reportable communicable disease in most U.S. states?
A) Common cold
B) Tuberculosis CORRECT
C) Seasonal allergies
D) Hypertension
Rationale
Tuberculosis is a reportable disease requiring notification to public health authorities.
Q5
A community health nurse is teaching a group about reducing the risk of lead poisoning. Which
action is most important?
A) Encouraging children to play outside
B) Testing children for blood lead levels at recommended ages CORRECT
C) Using lead-based paint in older homes
D) Drinking bottled water only
Rationale
Blood lead screening identifies exposure early, especially in children living in older housing.
3
, Q6
Which organization publishes the Immunization Schedules for the United States?
A) WHO
B) CDC CORRECT
C) FDA
D) NIH
Rationale
The CDC’s Advisory Committee on Immunization Practices (ACIP) publishes the U.S. immunization
schedules.
Q7
A nurse is caring for a client who is homeless. Which factor is most likely to affect the client’s
health?
A) Lack of transportation
B) Lack of stable housing and access to care CORRECT
C) Excessive exercise
D) Overuse of preventive services
Rationale
Homelessness is a major social determinant of health, limiting access to care, nutrition, and safety.
Q8
Which of the following is an example of tertiary prevention?
A) Immunization
B) Screening for hypertension
C) Cardiac rehabilitation after a myocardial infarction CORRECT
D) Smoking prevention education
4
