Outbreak investigation: practice question

A PSM question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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PSM · Outbreak investigation

Sample item

What is the first practical step in investigating a suspected outbreak?

AStart mass vaccination without defining casesBPublish media statements before collecting dataCVerify diagnosis and confirm that cases exceed expected levelsDIgnore laboratory findings

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

C. Verify diagnosis and confirm that cases exceed expected levels

Outbreak investigation begins by verifying the diagnosis and confirming whether observed cases exceed the expected baseline before generating hypotheses.

Option by option

A. Start mass vaccination without defining cases
Intervention needs context and evidence.
B. Publish media statements before collecting data
Public messaging should follow reliable initial information.
C. Verify diagnosis and confirm that cases exceed expected levels (correct)
Correct: verification prevents investigation of artefact or misdiagnosis.
D. Ignore laboratory findings
Laboratory data are often crucial to confirmation.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

Questions about this PSM question

What is the answer to this PSM question?

The best answer is C, Verify diagnosis and confirm that cases exceed expected levels. Outbreak investigation begins by verifying the diagnosis and confirming whether observed cases exceed the expected baseline before generating hypotheses.

Why is "Start mass vaccination without defining cases" not the answer?

Intervention needs context and evidence.

Why is "Publish media statements before collecting data" not the answer?

Public messaging should follow reliable initial information.

Why is "Ignore laboratory findings" not the answer?

Laboratory data are often crucial to confirmation.

What concept does this question test?

It tests Outbreak investigation in PSM. The correct option holds because: Correct: verification prevents investigation of artefact or misdiagnosis.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Outbreak investigation?

Practise biostatistics with small calculations until sensitivity, predictive values and risk measures are automatic. Then use the flashcards and the other PSM questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.