CERTIFIED IN PUBLIC HEALTH
EXAMINATION (CPH EXAM) QUESTIONS
AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
| INSTANT DOWNLOAD PDF
1. Which of the following best describes the primary purpose of public health
surveillance?
A. Treating infectious diseases in hospitals
B. Systematic collection, analysis, and interpretation of health data
C. Providing surgical interventions
D. Conducting individual clinical diagnosis
Rationale: Public health surveillance focuses on ongoing systematic collection
and analysis of health data for prevention and control of disease at the
population level.
2. Which epidemiologic measure is used to describe new cases of disease in a
population over time?
A. Prevalence
B. Incidence
C. Mortality rate
D. Case-fatality rate
Rationale: Incidence measures the occurrence of new cases within a specified
time period.
, 3. What is the most appropriate study design for determining prevalence?
A. Randomized controlled trial
B. Cohort study
C. Cross-sectional study
D. Case-control study
Rationale: Cross-sectional studies measure exposure and outcome at a single
point in time, ideal for prevalence.
4. Herd immunity refers to:
A. Immunity acquired through antibiotics
B. Protection of a population when a sufficient proportion is immune
C. Immunity developed after surgery
D. Individual immunity after infection only
Rationale: Herd immunity protects the community when enough individuals are
immune, reducing disease spread.
5. Which level of prevention focuses on early detection and prompt
treatment?
A. Primary prevention
B. Secondary prevention
C. Tertiary prevention
D. Quaternary prevention
Rationale: Secondary prevention aims at early disease detection and
intervention.
, 6. Which rate measures the number of deaths in a population per 1,000
individuals per year?
A. Incidence rate
B. Crude mortality rate
C. Attack rate
D. Fertility rate
Rationale: Crude mortality rate reflects overall deaths in a population over time.
7. What is the main goal of epidemiology?
A. Treat individual patients
B. Study distribution and determinants of disease
C. Develop pharmaceuticals
D. Provide emergency surgery
Rationale: Epidemiology studies patterns, causes, and effects of health
conditions in populations.
8. Which is an example of a vector-borne disease?
A. Tuberculosis
B. Influenza
C. Malaria
D. Diabetes
Rationale: Malaria is transmitted via mosquitoes, a biological vector.
9. Sensitivity of a test refers to:
A. Ability to identify true negatives
B. Ability to identify true positives
EXAMINATION (CPH EXAM) QUESTIONS
AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
| INSTANT DOWNLOAD PDF
1. Which of the following best describes the primary purpose of public health
surveillance?
A. Treating infectious diseases in hospitals
B. Systematic collection, analysis, and interpretation of health data
C. Providing surgical interventions
D. Conducting individual clinical diagnosis
Rationale: Public health surveillance focuses on ongoing systematic collection
and analysis of health data for prevention and control of disease at the
population level.
2. Which epidemiologic measure is used to describe new cases of disease in a
population over time?
A. Prevalence
B. Incidence
C. Mortality rate
D. Case-fatality rate
Rationale: Incidence measures the occurrence of new cases within a specified
time period.
, 3. What is the most appropriate study design for determining prevalence?
A. Randomized controlled trial
B. Cohort study
C. Cross-sectional study
D. Case-control study
Rationale: Cross-sectional studies measure exposure and outcome at a single
point in time, ideal for prevalence.
4. Herd immunity refers to:
A. Immunity acquired through antibiotics
B. Protection of a population when a sufficient proportion is immune
C. Immunity developed after surgery
D. Individual immunity after infection only
Rationale: Herd immunity protects the community when enough individuals are
immune, reducing disease spread.
5. Which level of prevention focuses on early detection and prompt
treatment?
A. Primary prevention
B. Secondary prevention
C. Tertiary prevention
D. Quaternary prevention
Rationale: Secondary prevention aims at early disease detection and
intervention.
, 6. Which rate measures the number of deaths in a population per 1,000
individuals per year?
A. Incidence rate
B. Crude mortality rate
C. Attack rate
D. Fertility rate
Rationale: Crude mortality rate reflects overall deaths in a population over time.
7. What is the main goal of epidemiology?
A. Treat individual patients
B. Study distribution and determinants of disease
C. Develop pharmaceuticals
D. Provide emergency surgery
Rationale: Epidemiology studies patterns, causes, and effects of health
conditions in populations.
8. Which is an example of a vector-borne disease?
A. Tuberculosis
B. Influenza
C. Malaria
D. Diabetes
Rationale: Malaria is transmitted via mosquitoes, a biological vector.
9. Sensitivity of a test refers to:
A. Ability to identify true negatives
B. Ability to identify true positives
