1. The purpose is to limit the incidence of disease by controlling causes and risk factors

A. Primordial prevention
B. Primary prevention
C. Secondary prevention
D. Tertiary prevention

2. The extent to which a test is measuring what it is intended to measure

A. Reliability
B. Validity
C. Sensitivity
D. Specificity

3. An infected person is less likely to encounter a susceptible person when a large proportion of the members of the group are immune

A. Active immunity
B. Passive immunity
C. Herd immunity
D. Specific immunity

4. Avoid smoking to reduce chances of COPD is included in

A. Primordial prevention
B. Primary prevention
C. Secondary prevention
D. Tertiary prevention

5. Immunisation of child comes under which level of prevention

A. Primordial prevention
B. Primary prevention
C. Secondary prevention
D. Tertiary prevention

Answer with explanations

1. B

Primary prevention includes those measures that prevent the onset of illness before the disease process begins.

2. B

Reliability is about the consistency of a measure, and validity is about the accuracy of a measure

3. C

The concept of herd immunity is that when a high enough proportion of the population is vaccinated against a disease or has been infected with a disease and developed antibodies against it, anyone infected person will have the opportunity to infect less than one other susceptible person, halting spread.

4. A

Life style modification comes under primordial prevention to reduce risk factors.

5. B

Immunization against infectious disease is a good example of primary prevention.