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A community vaccination programme achieves high coverage, indirectly reducing exposure among some people who are not immune. This phenomenon is:

An epidemic curve shows a sharp rise in cases followed by a gradual decline after guests attended the same function. This pattern MOST strongly suggests:

Which occupational history question is MOST useful when assessing possible work-related asthma?

A hospital cleaner repeatedly develops dermatitis after using a particular cleaning chemical. Which action BEST illustrates hazard control at source?

A patient is bitten by a dog of unknown vaccination status in an area where rabies occurs. What is the MOST appropriate principle?

A municipality improves housing, sanitation, education and employment opportunities in a disadvantaged community. Over time, several health indicators improve. This MOST strongly illustrates:

Several patients develop acute watery diarrhoea after using the same unsafe water source. What should the outbreak team do FIRST after verifying that the reported increase is genuine?

A highly sensitive screening test is particularly useful when the programme aims to:

South Africa’s “quadruple burden of disease” is best understood as the simultaneous burden of:

A patient knows that smoking is harmful but says, “I have decided to stop and I will set a quit date next week.” In a stages-of-change model, the patient is MOST consistent with: