Antenatal care: immunisation: practice question

A OBG 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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OBG · Antenatal care: immunisation

Sample item

Which vaccine is recommended in every pregnancy at 27 to 36 weeks in many national guidelines to protect the newborn from pertussis?

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

The answer and the reasoning

B. Tdap

Tdap vaccination between 27 and 36 weeks gives transplacental pertussis antibodies to the newborn who is too young to be vaccinated. It is an inactivated, safe vaccine. BCG, OPV and varicella vaccine are live and not given in pregnancy.

Option by option

  • A. Oral polio vaccine

    OPV is live and is not used for maternal immunisation.

  • B. Tdap (correct)

    Correct. Maternal antibody transfer protects the infant in the first months.

  • C. Varicella vaccine

    Varicella vaccine is live and contraindicated.

  • D. BCG

    BCG is live and is a neonatal vaccine.

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 OBG questions

Questions about this OBG question

What is the answer to this OBG question?

The best answer is B, Tdap. Tdap vaccination between 27 and 36 weeks gives transplacental pertussis antibodies to the newborn who is too young to be vaccinated.

Why is "Oral polio vaccine" not the answer?

OPV is live and is not used for maternal immunisation.

Why is "Varicella vaccine" not the answer?

Varicella vaccine is live and contraindicated.

Why is "BCG" not the answer?

BCG is live and is a neonatal vaccine.

What concept does this question test?

It tests Antenatal care: immunisation in OBG. It is an inactivated, safe vaccine. BCG, OPV and varicella vaccine are live and not given in pregnancy.

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 Antenatal care: immunisation?

Learn management algorithms as steps: PPH, eclampsia, ectopic pregnancy. Then use the flashcards and the other OBG 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.