# A veterinary doctor had pyrexia of unknown origin His blood culture in special laboratory media was positive for gram negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture ? with Answer - Microbiology | TestPrep

> Solved MCQ: A veterinary doctor had pyrexia of unknown origin His blood culture in special laboratory media was positive for gram negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture ? Correct Answer: D. Brucella spp. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

---

Tested in Competitive Exams:

- [NTS Test Prep](https://test-prep.blog/exams/nts)
- [FPSC Past Papers](https://test-prep.blog/exams/fpsc)
- [PPSC Solved MCQs](https://test-prep.blog/exams/ppsc)
- [PMDC MDCAT 2026](https://test-prep.blog/exams/mdcat)
- [UET ECAT Prep](https://test-prep.blog/exams/ecat)
- [CSS Central Superior](https://test-prep.blog/exams/css)

- [Microbiology](https://test-prep.blog/categories/microbiology)
Difficulty: Moderate 67% Accuracy

# A veterinary doctor had pyrexia of unknown origin His blood culture in special laboratory media was positive for gram negative short bacilli which was oxidase positive. Which one of the following is the likely organism grown in culture ?

Direct Answer & Quick Reference

The correct option is **D. Brucella spp**.

A. Pasturella spp

B. Francisella spp

C. Bartonella spp

D. Brucella spp **(Correct Answer)**

✨ Explain with AI

Verified Key: D. Brucella spp
Solved by 4,517+ students

Verified against official examination board answer keys and standard curriculum textbooks.

- [Previous Question A rise in the anti-HBc immunoglobulin in a patient indicates _____ ?](https://test-prep.blog/mcq/a-rise-in-the-anti-hbc-immunoglobulin-in-a-patient-indicates-e3bf302c-8194-4317-8e3f-ad5484886abf)
- [Next Question Cytopathic effect is shown by _____ ?](https://test-prep.blog/mcq/cytopathic-effect-is-shown-by-daacc673-63f5-4a9c-84e3-82c07e22f617)

- [Practice More Microbiology MCQs](https://test-prep.blog/quiz/smart?category=microbiology)
- [How We Verify Questions →](https://test-prep.blog/editorial-policy)

## Subject Overview

Explore thousands of solved past paper MCQs for Microbiology categorized with explanations.

- [Browse All Microbiology MCQs →](https://test-prep.blog/categories/microbiology)

## Related Questions

- [A rise in the anti-HBc immunoglobulin in a patient indicates _____ ?](https://test-prep.blog/mcq/a-rise-in-the-anti-hbc-immunoglobulin-in-a-patient-indicates-e3bf302c-8194-4317-8e3f-ad5484886abf)
- [Cytopathic effect is shown by _____ ?](https://test-prep.blog/mcq/cytopathic-effect-is-shown-by-daacc673-63f5-4a9c-84e3-82c07e22f617)
- [Which of the following would you consider to be general properties of viruses _____ ?](https://test-prep.blog/mcq/which-of-the-following-would-you-consider-to-be-general-properties-of-viruses-c7452301-4bb9-44a9-9056-acd59c061c38)
- [Most common opportunistic infection in AIDS is _____ ?](https://test-prep.blog/mcq/most-common-opportunistic-infection-in-aids-is-84252c44-99e9-44e5-a644-165dec2ddae1)
- [Viruses can be cultured in all except _____ ?](https://test-prep.blog/mcq/viruses-can-be-cultured-in-all-except-e7e1a0c0-3e2e-4f89-bd68-c36ce96d40b1)

---
*Source: https://test-prep.blog/mcq/a-veterinary-doctor-had-pyrexia-of-unknown-origin-his-blood-culture-in-special-l-1d70ac5f-b1d5-4d4b-8255-bec7f89e3903*
*Format: Markdown for Agents (Content Negotiation: text/markdown)*
