General Science & Healthcare•Updated for 2026 Competitive Exams
Multiple Choice Questions on Epidemiology
Practice top multiple choice questions (MCQs), topic summary, and verified answers for Multiple Choice Questions on Epidemiology. Essential for Central & State competitive examinations. Solve these high-frequency practice questions with step-by-step solutions to evaluate your preparation level.
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Practice Questions & Explanations (20 Questions)
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Q1Nursing / MedicalMedium
Epidemiology is defined as the study of:
Q2Nursing / MedicalMedium
Who is considered the 'father of modern epidemiology' for his work tracing the source of a cholera outbreak in London?
Q3Nursing / MedicalMedium
The constant presence of a disease or infectious agent within a given geographic area is called:
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Q4Nursing / MedicalMedium
An occurrence of more cases of a disease than expected in a given area or among a specific group of people over a particular period is called an:
Q5Nursing / MedicalMedium
An epidemic that has spread over several countries or continents, usually affecting a large number of people, is a:
Q6Nursing / MedicalMedium
Which rate measures the number of NEW cases of a disease that develop in a population during a specific time period?
Q7Nursing / MedicalMedium
Which rate measures the TOTAL number of cases (both old and new) of a disease existing in a population at a specific point in time?
Q8Nursing / MedicalMedium
The 'epidemiologic triad' consists of which three components?
Q9Nursing / MedicalMedium
The habitat in which an infectious agent normally lives, grows, and multiplies is called the:
Q10Nursing / MedicalMedium
An animate intermediary (like a mosquito or tick) that carries the agent from a reservoir to a susceptible host is called a:
Q11Nursing / MedicalMedium
An inanimate object or substance capable of carrying infectious organisms and transferring them from one individual to another is called a:
Q12Nursing / MedicalMedium
A person or animal without apparent disease who harbors a specific infectious agent and is capable of transmitting it is a:
Q13Nursing / MedicalMedium
The time interval between invasion by an infectious agent and the appearance of the first sign or symptom of the disease is the:
Q14Nursing / MedicalMedium
Which type of epidemiological study involves following a group of people over time to see who develops a disease?
Q15Nursing / MedicalMedium
Which type of study compares a group of people with a disease to a group without the disease to look for past exposures?
Q16Nursing / MedicalMedium
A study that examines the relationship between diseases and other variables of interest as they exist in a defined population at one particular time is a:
Q17Nursing / MedicalMedium
The measure of the proportion of persons with a particular disease who die from that disease is the:
Q18Nursing / MedicalMedium
Herd immunity refers to:
Q19Nursing / MedicalMedium
Which of the following is considered an active surveillance method?
Q20Nursing / MedicalMedium
The 'index case' in an epidemiological investigation is:
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