Immunization: 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 · Immunization

Sample item

What is vaccine efficacy measured in trials?

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

The answer and the reasoning

B. Protection under ideal conditions

This item reviews Immunization; Protection under ideal conditions is the best answer because it directly fits the forensic or public-health principle described.

Option by option

  • A. Birth rate

    Birth rate is plausible but not the best answer.

  • B. Protection under ideal conditions (correct)

    Correct. Protection under ideal conditions matches the defining principle.

  • C. Hospital beds

    Hospital beds is unsupported by the key information.

  • D. Cold-chain temperature

    Cold-chain temperature does not fit the stated scenario.

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.

More PSM questions

Questions about this PSM question

What is the answer to this PSM question?

The best answer is B, Protection under ideal conditions. This item reviews Immunization; Protection under ideal conditions is the best answer because it directly fits the forensic or public-health principle described.

Why is "Birth rate" not the answer?

Birth rate is plausible but not the best answer.

Why is "Hospital beds" not the answer?

Hospital beds is unsupported by the key information.

Why is "Cold-chain temperature" not the answer?

Cold-chain temperature does not fit the stated scenario.

What concept does this question test?

It tests Immunization in PSM. The correct option holds because: Correct. Protection under ideal conditions matches the defining principle.

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 Immunization?

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.