PUBLIC HEATH PROFESSIONAL EXAM
PRACTICE-QUESTION AND COLLECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025/2026 Q&A |INSTANT
DOWNLOAD PDF
Public Health Professional Exam Questions
1. Which of the following are key functions of public health?
A. Health promotion
B. Disease prevention
C. Clinical diagnosis
D. Policy development
Correct answers: A, B, D
Rationale: Public health focuses on promoting health, preventing diseases, and developing
policies to improve community health, whereas clinical diagnosis is primarily a medical
function.
2. The main purpose of epidemiology is to:
A. Treat individual patients
B. Study disease patterns in populations
C. Develop new medications
D. Provide nursing care
Correct answer: B
Rationale: Epidemiology is the study of the distribution and determinants of health-related states
in populations, not individual treatment.
3. Which of the following are considered social determinants of health?
A. Income level
B. Education
C. Genetic mutations
D. Employment status
Correct answers: A, B, D
Rationale: Social determinants include conditions in which people are born, grow, live, work,
and age. Genetics are biological determinants.
4. Herd immunity is achieved when:
A. Everyone gets infected
B. A significant proportion of the population is vaccinated
,C. Only children are vaccinated
D. Natural disasters occur
Correct answer: B
Rationale: Herd immunity occurs when enough people are immune (via vaccination or prior
infection), reducing disease transmission.
5. Which of the following are core public health disciplines?
A. Biostatistics
B. Environmental health
C. Clinical surgery
D. Health policy and management
Correct answers: A, B, D
Rationale: Core public health disciplines include biostatistics, environmental health,
epidemiology, health policy, and social/behavioral sciences. Clinical surgery is a medical
discipline.
6. The most common method of disease surveillance is:
A. Active surveillance
B. Passive surveillance
C. Randomized surveillance
D. Clinical trials
Correct answer: B
Rationale: Passive surveillance relies on routine reporting of diseases by health facilities and is
most commonly used due to cost-effectiveness.
7. Which of the following are types of epidemiologic studies?
A. Cross-sectional
B. Cohort
C. Randomized controlled trial
D. Case-control
Correct answers: A, B, D
Rationale: Epidemiologic studies include observational (cross-sectional, cohort, case-control)
and experimental (RCT).
8. The concept of “incidence” refers to:
A. Total cases in a population at a given time
B. New cases occurring in a defined period
C. Death rate due to a disease
D. Prevalence rate
, Correct answer: B
Rationale: Incidence measures the number of new cases over a specific time period, whereas
prevalence includes all existing cases.
9. Which of the following are examples of primary prevention?
A. Vaccination
B. Screening for cancer
C. Health education
D. Surgery for advanced disease
Correct answers: A, C
Rationale: Primary prevention aims to prevent disease before it occurs (vaccines, education).
Screening is secondary prevention, surgery is tertiary.
10. The main goal of health promotion is to:
A. Cure disease
B. Enhance well-being and prevent illness
C. Treat symptoms
D. Reduce hospital admissions only
Correct answer: B
Rationale: Health promotion empowers individuals and communities to take control of health
and prevent disease.
11. Which of the following are environmental risk factors for disease?
A. Air pollution
B. Unsafe water
C. Smoking
D. Noise pollution
Correct answers: A, B, D
Rationale: Environmental risk factors include physical, chemical, and biological exposures in
the environment. Smoking is a behavioral risk factor.
12. Which indicators are used to measure population health?
A. Life expectancy
B. Infant mortality rate
C. Number of hospitals
D. Morbidity rates
Correct answers: A, B, D
Rationale: Population health is measured using indicators like life expectancy, mortality,
morbidity, and disease prevalence.
13. Which of the following are common sources of public health data?
A. Vital registration systems
PRACTICE-QUESTION AND COLLECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2025/2026 Q&A |INSTANT
DOWNLOAD PDF
Public Health Professional Exam Questions
1. Which of the following are key functions of public health?
A. Health promotion
B. Disease prevention
C. Clinical diagnosis
D. Policy development
Correct answers: A, B, D
Rationale: Public health focuses on promoting health, preventing diseases, and developing
policies to improve community health, whereas clinical diagnosis is primarily a medical
function.
2. The main purpose of epidemiology is to:
A. Treat individual patients
B. Study disease patterns in populations
C. Develop new medications
D. Provide nursing care
Correct answer: B
Rationale: Epidemiology is the study of the distribution and determinants of health-related states
in populations, not individual treatment.
3. Which of the following are considered social determinants of health?
A. Income level
B. Education
C. Genetic mutations
D. Employment status
Correct answers: A, B, D
Rationale: Social determinants include conditions in which people are born, grow, live, work,
and age. Genetics are biological determinants.
4. Herd immunity is achieved when:
A. Everyone gets infected
B. A significant proportion of the population is vaccinated
,C. Only children are vaccinated
D. Natural disasters occur
Correct answer: B
Rationale: Herd immunity occurs when enough people are immune (via vaccination or prior
infection), reducing disease transmission.
5. Which of the following are core public health disciplines?
A. Biostatistics
B. Environmental health
C. Clinical surgery
D. Health policy and management
Correct answers: A, B, D
Rationale: Core public health disciplines include biostatistics, environmental health,
epidemiology, health policy, and social/behavioral sciences. Clinical surgery is a medical
discipline.
6. The most common method of disease surveillance is:
A. Active surveillance
B. Passive surveillance
C. Randomized surveillance
D. Clinical trials
Correct answer: B
Rationale: Passive surveillance relies on routine reporting of diseases by health facilities and is
most commonly used due to cost-effectiveness.
7. Which of the following are types of epidemiologic studies?
A. Cross-sectional
B. Cohort
C. Randomized controlled trial
D. Case-control
Correct answers: A, B, D
Rationale: Epidemiologic studies include observational (cross-sectional, cohort, case-control)
and experimental (RCT).
8. The concept of “incidence” refers to:
A. Total cases in a population at a given time
B. New cases occurring in a defined period
C. Death rate due to a disease
D. Prevalence rate
, Correct answer: B
Rationale: Incidence measures the number of new cases over a specific time period, whereas
prevalence includes all existing cases.
9. Which of the following are examples of primary prevention?
A. Vaccination
B. Screening for cancer
C. Health education
D. Surgery for advanced disease
Correct answers: A, C
Rationale: Primary prevention aims to prevent disease before it occurs (vaccines, education).
Screening is secondary prevention, surgery is tertiary.
10. The main goal of health promotion is to:
A. Cure disease
B. Enhance well-being and prevent illness
C. Treat symptoms
D. Reduce hospital admissions only
Correct answer: B
Rationale: Health promotion empowers individuals and communities to take control of health
and prevent disease.
11. Which of the following are environmental risk factors for disease?
A. Air pollution
B. Unsafe water
C. Smoking
D. Noise pollution
Correct answers: A, B, D
Rationale: Environmental risk factors include physical, chemical, and biological exposures in
the environment. Smoking is a behavioral risk factor.
12. Which indicators are used to measure population health?
A. Life expectancy
B. Infant mortality rate
C. Number of hospitals
D. Morbidity rates
Correct answers: A, B, D
Rationale: Population health is measured using indicators like life expectancy, mortality,
morbidity, and disease prevalence.
13. Which of the following are common sources of public health data?
A. Vital registration systems
