Bacteriology USMLE Step 1 Practice Question
An 18-year-old, previously healthy female presents to the student health service with fever, vomiting, and diarrhea. On physical examination, she is hypotensive, red, sunburn-like skin rash and has an erythematous, red, sunburn-like skin rash. She is currently menstruating and has been using super-absorbent tampons. Which of the following findings from a positive culture would confirm the suspected diagnosis?
Answer choices
- AOrganisms are acid-fast.
- BOrganisms grow on Thayer-Martin medium.
- COrganisms have positive quellung reaction.
- DOrganisms are coagulase-positive.Correct answer
- EOrganisms grow on EMB (eosin-methylene blue) agar.
- FOrganisms are beta-hemolytic on blood agar
See the full explanation
Get the correct-answer rationale, why each distractor is wrong, the underlying mechanism, and high-yield associations ā plus adaptive practice that targets your weak areas ā with a free MedBoardPRO account.