Bacterial Infections USMLE Step 1 Practice Question
A 42 year old hunter presents with fever, painful axillary lymphadenopathy, and an ulcerated lesion on his right hand. He says he skinned several wild rabbits 5 days ago. Gram stain is poorly visualized, and the laboratory requests special cysteine enriched media. Which of the following is the most likely causal organism?
Answer choices
- APasteurella multocida
- BFrancisella tularensisCorrect answer
- CBrucella melitensis
- DBartonella henselae
- ERickettsia prowazekii
- FYersinia pestis
See the full explanation
Get the correct-answer rationale, why each distractor is wrong, the underlying mechanism, and high-yield associations — plus adaptive practice that targets your weak areas — with a free MedBoardPRO account.