Bacteriology USMLE Step 1 Practice Question
A 32-year-old woman presents with a 2-day history of dysuria, urinary frequency, and suprapubic pain. She has no fever, flank pain, or systemic symptoms. Urinalysis shows pyuria and bacteriuria. Urine culture is pending. She has no significant past medical history. Which of the following organisms is most likely responsible for her uncomplicated cystitis?
Answer choices
- AProteus mirabilis
- BStaphylococcus saprophyticus
- CEscherichia coliCorrect answer
- DKlebsiella pneumoniae
- EPseudomonas aeruginosa
- FEnterococcus faecalis
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