Bacterial Infections USMLE Step 1 Practice Question
A 39 year old refugee presents with high fever, severe headache, and a maculopapular rash that began on the trunk and spread outward. He has been living in crowded conditions with poor sanitation, and lice are noted in his clothing. Which of the following is the most likely causal organism?
Answer choices
- ABartonella quintana
- BAnaplasma phagocytophilum
- CRickettsia rickettsii
- DRickettsia prowazekiiCorrect answer
- EEhrlichia chaffeensis
- FCoxiella burnetii
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