Questions & Answers
Browse all 20 questions from the
Introduction to Epidemiology study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the primary focus of the field of epidemiology?
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A
Creating new vaccines
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B
Studying patterns of health and disease in populations
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C
Fixing broken bones in hospitals
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D
Developing new surgical robots
2
Which term describes an increase in the number of cases of a disease above what is normally expected in a specific area?
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A
Endemic
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B
Epidemic
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C
Pandemic
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D
Prognosis
3
What do epidemiologists call the original person who introduces an infectious disease into a population?
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A
Patient Zero
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B
The Carrier
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C
The Vector
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D
The Host
4
Which of these is a common 'vector' that can transmit diseases like malaria to humans?
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A
Drinking water
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B
Mosquitoes
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C
Dust particles
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D
Direct sunlight
5
What is a 'pandemic' defined as?
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A
A disease that only affects one city
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B
A disease that stays in one family
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C
An epidemic occurring over a very wide geographic area
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D
A disease that is not contagious
6
What is the purpose of a vaccine?
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A
To kill all bacteria in the body instantly
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B
To train the immune system to recognize and fight pathogens
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C
To provide energy for physical exercise
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D
To change the patient's DNA
7
Which of these is a non-communicable disease?
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A
Influenza
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B
Diabetes
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C
Measles
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D
Common cold
8
What is the 'incubation period' of a disease?
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A
The time between catching a pathogen and showing symptoms
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B
The time a patient spends in the hospital
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C
The time it takes for a vaccine to be manufactured
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D
The length of a doctor's medical training
9
What does the term 'transmission' mean in epidemiology?
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A
The process of curing a patient
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B
The way a pathogen moves from one host to another
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C
The name of a hospital department
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D
The recovery rate of a disease
10
Which organization is the specialized agency of the United Nations responsible for international public health?
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A
NASA
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B
World Health Organization
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C
UNICEF
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D
Red Cross
11
What is a 'pathogen'?
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A
A type of hospital medicine
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B
Any organism that can cause disease
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C
A method for cleaning hands
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D
A record of patient symptoms
12
Which of these is considered a basic hygiene practice to prevent the spread of germs?
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A
Eating fast food
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B
Handwashing with soap
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C
Sharing personal water bottles
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D
Ignoring coughs
13
What do we call the measure of how many people get sick in a population over a specific period?
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A
Morbidity
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B
Mortality
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C
Recovery
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D
Medication
14
What is 'mortality' a measure of?
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A
The number of people who recover
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B
The number of deaths in a population
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C
The cost of healthcare
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D
The speed of a virus
15
Which of these is an example of a viral disease?
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A
Tetanus
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B
Influenza
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C
Strep throat
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D
Food poisoning
16
How do antibodies protect the human body?
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A
By cooling down the body temperature
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B
By identifying and neutralizing foreign invaders like viruses
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C
By breaking down food for energy
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D
By strengthening muscle tissue
17
What is an 'endemic' disease?
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A
A disease that is constantly present in a specific region or population
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B
A disease that has been wiped out globally
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C
A disease that only spreads through space
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D
A disease that never affects humans
18
Which of these is a way that infectious diseases can be spread through the air?
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A
Shaking hands
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B
Drinking contaminated water
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C
Droplets from a cough or sneeze
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D
Touching a clean surface
19
Why is 'quarantine' used in public health?
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A
To punish people who are sick
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B
To restrict the movement of people to prevent the spread of disease
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C
To make it easier for doctors to find patients
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D
To test new medical equipment
20
What is the main goal of public health surveillance?
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A
To spy on citizens
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B
To collect data to track health trends and detect outbreaks
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C
To increase the cost of medicine
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D
To limit the number of doctors
