Communicable diseases: filariasis elimination threshold: 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 · Communicable diseases: filariasis elimination threshold

Sample item

The target for interruption of transmission of lymphatic filariasis in an endemic area is a microfilaria rate of:

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

The answer and the reasoning

D. Below 1 percent

Elimination programmes aim to bring the microfilaria rate below 1 percent in the community. Transmission assessment surveys then verify that infection has declined enough to stop MDA.

Option by option

  • A. Below 10 percent

    10 percent is far above the target.

  • B. Zero in every village

    Zero in every village is not the operational criterion.

  • C. Below 5 percent

    5 percent is too high to stop transmission.

  • D. Below 1 percent (correct)

    Correct. Mf rate under 1 percent is the target.

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.

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Questions about this PSM question

What is the answer to this PSM question?

The best answer is D, Below 1 percent. Elimination programmes aim to bring the microfilaria rate below 1 percent in the community.

Why is "Below 10 percent" not the answer?

10 percent is far above the target.

Why is "Zero in every village" not the answer?

Zero in every village is not the operational criterion.

Why is "Below 5 percent" not the answer?

5 percent is too high to stop transmission.

What concept does this question test?

It tests Communicable diseases: filariasis elimination threshold in PSM. Transmission assessment surveys then verify that infection has declined enough to stop MDA.

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 Communicable diseases: filariasis elimination threshold?

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.