Gastrointestinal microbiology: practice question

A Microbiology 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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Microbiology · Gastrointestinal microbiology

Sample item

Which organism causes enteric fever and may persist in the gallbladder of a chronic carrier?

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

The answer and the reasoning

D. Salmonella Typhi

Salmonella Typhi causes enteric fever and can persist in the gallbladder, allowing chronic carriage and fecal-oral transmission after acute illness has resolved.

Option by option

  • A. Campylobacter jejuni

    Campylobacter commonly causes acute inflammatory gastroenteritis.

  • B. Vibrio cholerae

    Vibrio cholerae causes profuse secretory diarrhea.

  • C. Shigella sonnei

    Shigella primarily causes inflammatory dysentery.

  • D. Salmonella Typhi (correct)

    Correct: S. Typhi causes enteric fever and can establish carriage.

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 Microbiology questions

Questions about this Microbiology question

What is the answer to this Microbiology question?

The best answer is D, Salmonella Typhi. Salmonella Typhi causes enteric fever and can persist in the gallbladder, allowing chronic carriage and fecal-oral transmission after acute illness has resolved.

Why is "Campylobacter jejuni" not the answer?

Campylobacter commonly causes acute inflammatory gastroenteritis.

Why is "Vibrio cholerae" not the answer?

Vibrio cholerae causes profuse secretory diarrhea.

Why is "Shigella sonnei" not the answer?

Shigella primarily causes inflammatory dysentery.

What concept does this question test?

It tests Gastrointestinal microbiology in Microbiology. The correct option holds because: Correct: S. Typhi causes enteric fever and can establish carriage.

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 Gastrointestinal microbiology?

Make a one-line identity card for each organism: shape and stain, defining test, toxin, disease and drug. Then use the flashcards and the other Microbiology 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.